Theoretical Computer Science 91 (1991) 315 Elsevier Author Index Volume 91 (1991) (The issue number is given in front of the page numbers) Arfi, M., Opérations polynomiales et hiérarchies de concaténation (1) 71- 84 Buneman, P., A. Jung and A. Ohori, Using powerdomains to generalize relational (1) 23- 55 databases (2) 239-264 Burstall, R.M., see A. Tarlecki (1) 57- 69 Culik II, K. and S. Dube, An efficient solution of the firing mob problem (1) 57- 69 Dube, S., see K. Culik II (2) 239-264 Goguen, J.A., see A. Tarlecki Hashiguchi, K., Algorithms for determining relative inclusion star height and inclusion (1) 85-100 star height (1) 23- 55 Jung, A., see P. Buneman Kearny, P. and J. Staples, An extensional fixed-point semantics for nondeterministic data (2) 129-179 flow (Fundamental Study) (1) 101-117 Kinber, E.B., On complete sets of samples for generalized regular >xpressions Knijnenburg, P.M.W. and J. van Leeuwen, On models for propositional dynamic logic (2) 181-203 (1) 119-128 Moews, D., Sum of games born on Days 2 and 3 (Mathematical Games) (1) 23- 55 Ohori, A., see P. Buneman wm 4-21 Pandu Rangan, C., see A. Srinivasan (2) 285-313 Rozoy, B. and P.S. Thiagarajan, Event structures and trace monoids Srinivasan, A. and C. Pandu Rangan, Efficient algorithms for the minimum weighted (1) 1-21 dominating clique problem on permutation graphs (2) 129-179 Staples, J., see P. Kearny Tarlecki, A., R.M. Burstall and J.A. Goguen, Some fundamental algebraic tools for the (2) 239-264 semantics of computation: Part 3. Indexed categories (2) 285-313 Thiagarajan, P.S., see B. Rozoy (2) 181-203 Van Leeuwen, J., see P.M.W. Knijnenburg (2) 205-238 Vogler, W., Executions: a new partial-order semantics of Petri nets (2) 265-283 Zhang, W., Cut elimination and automatic proof procedures Elsevier Science Publishers B.V.