TY  - BOOK
AU  - Hackl C E
ED  - Informatik Symposium( 4th : 1974 : Wildbad )
ED  - Informatik Symposium 4th
TI  - Programming methodology
U1  - 5.1 
PY  - 1975///
CY  - Berlin
PB  - Springer Verlag
KW  - Computer programming
ER  -