The punctured plane: alternating projections and L 2 -angles M. Skwarczyński — 1991 Annales Polonici Mathematici
Some applications of the theorem on rational approximation in the mean M. Skwarczyński — 1976 Annales Polonici Mathematici
A continuation theorem for holomorphic mapping into a Hilbert space M. Skwarczyński — 1970 Annales Polonici Mathematici