TY - BOOK AU - Deussen Peter ED - Gesellschaft fur Informatik Conference on Theoretical Computer Science( 5th : 1981 : Karlsruhe ) ED - Gesellschaft fur Informatik Conference on Theoretical Computer Science 5th TI - Theoretical computer science : proceedings U1 - 4 PY - 1981/// CY - Berlin PB - Springer Verlag KW - Computer science ER -