TY - BOOK AU - Nagl M ED - Conference on Graphtheoretic Concepts in Computer Science( 15th : 1989 : Netherlands ) ED - Conference on Graphtheoretic Concepts in Computer Science 15th TI - Graphtheoretic concepts in computer science : proceedings U1 - 4.0151 PY - 1990/// CY - Berlin PB - Springer Verlag KW - Computer science KW - Graph theroy ER -