TY  - BOOK
AU  - Harrison Michael  A
TI  - Introduction to formal language theory
T2  - Addison-wesley series in computer science
U1  - D65,8(B)92, L8-;2 
PY  - 1978///
CY  - Reading
PB  - Addison-Wesley         
KW  -  Computer program language
KW  - Computer science
ER  -