High extensions of Abelian groups D. K. HarrisonJ. M. IrwinE. A. Walker OriginalPaper Pages: 319 - 330
A theorem on linear transformations of torsion-free modules of infinite rank P. Ribenboim OriginalPaper Pages: 353 - 358
On a method for expanding multiple integrals in terms of integrals in lower dimensions L. C. Hsu OriginalPaper Pages: 359 - 367
Die Zentralprojektion Einer Ebene auf Eine Andere in der Hyperbolischen Geometrie K. Fladt OriginalPaper Pages: 403 - 416
On the maximal number of independent circuits in a graph K. CorrádiA. Hajnal OriginalPaper Pages: 423 - 439
On semi-discrete lattices whose congruence relations form a Boolean algebra G. Grätzer OriginalPaper Pages: 441 - 445