TY  - DATA
AU  - A. Salomaa, M. Steinby
TI  - Automata, Languages and Programming
SN  - 9783540373056
PY  - 1977///
PB  - Springer Berlin Heidelberg
KW  - Computer Science
UR  - https://doi.org/10.1007/3-540-08342-1
ER  -