TY  - BOOK
AU  - Rozenberg, G.
AU  - Salomaa, A.
TI  - Current trends in theoretical computer science: essays and tutorials 
SN  - 9810214626
U1  -  004 
PY  - 1993///
CY  - London,UK
PB  - World Scientitic
KW  - Computer science
ER  -