TY  - BOOK
AU  - DENNING,  P.J.  & DENNIS, J.B. & QUALITZ,  J.E.
TI  - Machines, Languages, and Computation 
SN  - 0000135422582
U1  - 005.131 
PB  - New Jersey : Prentice-Hall
KW  - Programming Languages :Formal Languages
ER  -