1. Banas, J., Goebel, K.: Measures of Noncompactness in Banach Spaces. Marcel Dekker, Inc., New York (1980)
2. Browder, F.E.: The fixed point theory of multivalued mappings in topological vector spaces. Math. Ann. 177, 283–301 (1968)
3. Cauty, R.: Solution du probleme de point fixe de Schauder. Fundam. Math. 170, 231–246 (2001)
4. Darbo, G.: Punti uniti in transformazioxi a condominio non compatio. Rend. Semin. Mat. Univ. Padova 24, 84–92 (1955)
5. Day, M.M.: Amenable semigroups. Ill. J. Math. 1, 509–544 (1957)