On some Riemannian manifolds admitting a metric semi-symmetric connection J. Krawczyk — 1988 Colloquium Mathematicae
Simple conformally symmetric manifolds with metric semi-symmetric connection J. Krawczyk — 1988 Colloquium Mathematicae
A Remark on Discontinuous Translation Invariant Functionals on L... (G) for Certain Compact Groups G. W. Hebisch; J. Krawczyk — 1992 Monatshefte für Mathematik