1. Procol

   • Jan van den Bos
   • Chris Laffra

   OriginalPaper Pages: 511 - 538

2. An abstract data type for name analysis

   • U. Kastens
   • W. M. Waite

   OriginalPaper Pages: 539 - 558

3. On the expansion of non-linear functions

   • Peter G. Harrison

   OriginalPaper Pages: 559 - 574

4. Branching processes of Petri nets

   • Joost Engelfriet

   OriginalPaper Pages: 575 - 591

5. Some order dimension bounds for communication complexity problems

   • U. Faigle
   • W. Kern

   OriginalPaper Pages: 593 - 601

6. Correction to Null values in nested relational databases by M.A. Roth, H.F. Korth, and A. Silberschatz

   • M. Levene
   • G. Loizou

   Erratum Pages: 603 - 605

7. Addendum to Null values in nested relational databases

   • Mark A. Roth
   • Henry F. Korth
   • Abraham Silberschatz

   Erratum Pages: 607 - 610