EUROPEAN JOURNAL OF OPERATIONAL RESEARCH LS IER European Journal of Operational Research 112 (1999) 696-697 Contents Volume 112 Editorial R. Slowinski, J. Teghem and J. Wallenius Publisher’s Note Resource-constrained project scheduling: Notation, classification, models, and methods P. Brucker, A. Drexl, R. Mohring, K. Neumann and E. Pesch Improving the efficiency of the purchasing process using total cost of ownership information: The case of heating electrodes at Cockerill Sambre S.A. Z. Degraeve and F. Roodhooft Formulating and solving production planning problems L.J. LeBlanc, A. Shtub and G. Anandalingam Match-up scheduling under a machine breakdown M.S. Akturk and E. Gorgulu Measuring and designing flexibility as a generalized service degree Ch. Schneeweiss and H. Schneider An approximation for computing the throughput of closed assembly-type queueing networks H. Ayhan and M.A. Wortman The general routing polyhedron: A unifying framework A.N. Letchford The asymmetric travelling salesman problem and a reformulation of the Miller-Tucker—Zemlin constraints L. Gouveia and J.M. Pires A simulated annealing algorithm with the random compound move for the sequential partitioning problem of directed acyclic graphs T. Kaji and A. Ohuchi Approximation algorithms for the oriented two-dimensional bin packing problem A. Lodi, S. Martello and D. Vigo Multiple bottleneck assignment problem Y.P. Aneja and A.P. Punnen Optimization of dual response systems: A comprehensive procedure for degenerate and nondegenerate problems E. Del Castillo, S.-K. Fan and J. Semple Average-discounted equilibria in stochastic games J. Flesch, F. Thuijsman and O.J. Vrieze Product form stationary distributions for the M|G|k group-arrival group-departure loss system under a general acceptance policy A. Economou and D. Fakinos Development of a Neuro-Fuzzy approach for treating multimodal distributions and spurious clusters G. Pauler Decision making under partial probability information using pair-wise comparisons C. Parkan , L.-F. Wang and M.-L. Wu A note on the kinks at the mean variance frontier J. Voros, J. Kriens and L.W.G. Strijbosch A note on robustness of the efficient DMUs in data envelopment analysis V. Boljuncéi¢é Book Reviews H. Rleuren (ed. ) Multicriterion decision making in river basin planning and development K.S. Raju and C.R.S. Pillai Layout designs in cellular manufacturing M. Bazargan-Lari Reserve design for species preservation M.A. Clemens, C.S. ReVelle and J.C. Williams Operations planning for a multi-stage kanban system B.R. Sarker and C.V. Balan Stochastically minimizing the makespan in two-machine flow shops without blocking J. Kamburowski Contents Volume 112 Financial credit-risk evaluation with neural and neurofuzzy systems S. Piramuthu Computing lower bounds by destructive improvement — An application to resource-constrained project scheduling R. Klein and A. Scholl The multiple resource constrained project scheduling problem: A breadth-first approach T. Nazareth, S. Verma, S. Bhattacharya and A. Bagchi Transitive calibration of the AHP verbal scale J.S. Finan and W.J. Hurley Geometry of decision making and the vector space formulation of the analytic hierarchy process S. Zahir A subjective and objective integrated approach to determine attribute weights J. Ma, Z.-P. Fan and L.-H. Huang Robust and neutral methods for aggregating preferences into an outranking relation Ph. Vincke An improved BL-algorithm for genetic algorithm of the orthogonal packing of rectangles D. Liu and H. Teng On the inverse problem of linear programming and its application to minimum weight perfect k-matching S. Huang and Z. Liu A note on efficient solutions for the linear bilevel programming probiem M. Soismaa Gradient projection and local region search for multiobjective optimisation J.-B. Yang A decomposition approach for the fuel-constrained economic power-dispatch problem S. Takriti and B. Krasenbrink Graphical solution of (n x m) matrix of a game theory S. Kumar and D.S.N. Reddy Solution of 3 x 3 games using graphical method K.G.K. Nair and G. Ranijith Multicriterion decision making in performance evaluation of an irrigation system K.S. Raju and C.R.S. Pillai Ship maintenance scheduling by genetic algorithm and constraint-based reasoning S. Deris, S. Omatu, H. Ohta, Lt. Cdr. S. Kutar and P.A. Samat Extended optimal replacement model for deteriorating systems S.-H. Sheu Sensitivity analysis of a railway station track layout with respect to a given timetable M.A. Odijk Using the generalized assignment problem in scheduling the ROSAT space telescope J. Nowakovski, W. Schwarzler and E. Triesch Evaluating the impact of operating conditions on the performance of appointment scheduling rules in service systems C.-J. Ho and H.-S. Lau Optimal warranties, reliabilities and prices for durable goods in an oligopoly G.A. DeCroix A model for allocated versus actual costs in assignment and transportation problems C. Pilot and S. Pilot Travel time analysis for general item location assignment in a rectangular warehouse E.P. Chew and L.C. Tang Optimizing the natural gas supply mix of local distribution utilities J.-M. Guldmann and F. Wang Optimization models for quality and cost of modular software systems H.-W. Jung and B. Choi Clusters in a group: Decision making in the vector space formulation of the analytic hierarchy process S. Zahir Bandwidth packing with queuing delay costs: Bounding and heuristic solution procedures A. Amiri, E. Rolland and R. Barkhi Sojourn times in a random queue with and without preemption A.J. Field and P.G. Harrison 654 Tighter relaxations for the cutting stock problem C. Nitsche, G. Scheithauer and J. Terno A new upper bound for the 0-1 quadratic knapsack problem A. Billionnet, A. Faye and . Soutif Implied constraints and LP duals of general nonlinear programming problems P.K. Johri Fuzzy MCDM based on ideal and anti-ideal concepts G.-S. Liang A note on rough sets and common knowledge events H. Salonen and H. Nurmi