L. Lorentzen, H. Waadeland, Norway) Lorentzen, L. (Division of Mathematical Sciences, University of Trondheim, Norway) Waadeland, H. (Department of Mathematics and Statistics, University of Trondheim
Bohumil Volesky, J. Votruba, Canada) Volesky, Bohumil (McGill University, Montreal, Que., Czechoslovakia) Votruba, J. (Czechoslovak Academy of Sciences, Prague