Proceedings of the 15th Scandinavian Congress, Oslo, 1968/
edited by K. E. Aubert and W. Ljunggren.
- Berlin: New York: Springer-Verlag, 1970.
- 162 p.: illus., 26 cm.
- Lecture notes in mathematics; 118. .
- Lecture notes in mathematics (Springer-Verlag); 118. .