TY  - BOOK
AU  - Rozenberg Grzegorz Ed.
TI  - Advances in petrinets 1989
T2  - Lecture notes in computer science; 424
U1  - D65,8(B)-4N60un1:N89, N0 
PY  - 1990///
CY  - Berlin
PB  - Springer Verlag      
KW  - Computer science
ER  -