VDM '91. Formal Software Development Methods. 4th International Symposium of VDM Europe, Noordwijkerhout, The Netherlands, October 21-25, 1991. Procee [Paperback]

The proceedings of the fourth Vienna Development MethodSymposium, VDM '91, are published here in two volumes.Previous VDM symposia were held in 1987 (LNCS 252), 1988(LNCS 328), and 1990 (LNCS 428).The VDM symposia have been organized by the VDM Europe,formed in 1985 as an advisory board sponsored by theCommission of the European Communities. The VDM Europeworking group consisted of reasearchers, software engineers,and programmers, all interested in prommoting the industrialusage of formal methods for software development. The fourthVDM symposium presented not only VDM but also a large numberof other methods for formal software development.Volume 1 contains the conference contributions. It has fourparts: contributions of invited speakers, papers, projectreports, and tools demonstration abstracts. The emphasis ison methods and calculi for development, verification andverification tools support, experiences from doingdevelopments, and the associated theoretical problems.Volume2 contains four introductory tutorials (on LARCH,Refinement Calculus, VDM, and RAISE) and four advancedtutorials (on ABEL, PROSPECTRA, THE B Method, and TheStack). They present a comprehensive account of the state oftheart.A tutorial on Larch and LCL, a Larch/C interface language.- A tutorial on the refinement calculus.- Tutorial lecture notes on the Irish School of the VDM.- The RAISE specification language a tutorial.- Formal Development with ABEL.- The PROSPECTRA methodology and system: uniform transformational (meta-) development.- The B-method.- Mathematical methods for digital systems development.The proceedings of the fourth VDM Symposium are presented here in two volumes. Volume 1 contains invited and contributed papers, reports and abstracts. Volume 2 contains introductory and advanced tutorials. A large number of methods for formal software development besides VDM are presented.