J. Baeten (ed.): Applications of process algebra. Cambridge UP 1990, 330p. 0-521-40028-7. $55. 18821 J. Baeten: A brief history of process algebra. Internet ca. 2004, 17p. J. Baeten/W. Weikjland: Process algebra. Cambridge UP 1990. $75. J. Bergstra a.o. (ed.): Handbook of process algebra. Elsevier 2001, 1360p. $192. E. Best/R. Devillers/M. Koutny: Petri net algebra. Springer 2001, 380p. Petri nets are treated as composable objects, and as such they are embedded in a process algebra. Viceversa, an arbitrary process algebra can be given a Petri net semantics. Guy Cohen: Theorie algebrique des systemes a' evenements discrets. Course DEA, Paris 1994. Guy Cohen: Modelisation des reseaux urbains. Rapport CNRS 1994. W. Fokkink a.o. (ed.): Introduction to process algebra. Springer 2000, 160p. DM 59. 6141 Michiel Hazewinkel: Some problems of applied algebra. 6031 Chatterji/, 131-153. 18822 Bas Luttik: What is algebraic in process theory? El. Notes Theor. Comp. Sci. 162 (2006), 227-231. 24365 Christoph Poeppe: Fahrplan-Algebra. Spektrum 1995/11, 20-24. Gheorghe Stefanescu: Network algebra. Springer 2000, 400p. DM 154. 18916 Francesco Zappa: Types for Seal calculus. Master thesis Univ. Pisa 2000, 95p. 18917 Giuseppe Castagna/J. Vitek/Francesco Zappa: The Seal calculus. Inf. Comp. 201/1 (2005), 46p.