1. Punti uniti in transformazioni a codomio non compatto;Darbo;Rend. Sem. Mat. Univ. Padova,1955
2. Some problems of nonlinear analysis;Krasnoselskii;M.A., Amer. Math. Soc. Transl.,1958
3. On a fixed point principle;Sadovskii;Funkt. Anal.,1967
4. Structure of the fixed points sets of k-set-contractions;Petryshyn;Arch. Ration. Mech. Anal.,1970
5. Fixed points in locally convex spaces;Reich;Math. Z.,1972