[1] A. AMBROSETTI: 
Un teorema di esistenza per le equazioni differenziali negli spazi di Banach. Rend. Sem. Mat. Univ. Padova, 39 (1967), 349-360. 
MR 0222426 | 
Zbl 0174.46001[2] J. DANEŠ: 
On densifying and related mappings and their application in nonlinear functional analysis. Theory of Nonlinear Operators, Akademie-Verlag, Bwelin 1974, 15-46. 
MR 0361946[3] K. DEIMLING: 
Ordinary Differential Equations in Banach Spaces. Lect. Notes in Math. 596, Springer-Verlag, Berlin 1977. 
MR 0463601 | 
Zbl 0361.34050[4] R. H. MARTIN, Jr.: 
Non linear Operators and Differential Equations in Banach Spaces. John Wiley and Sons, New York, 1976. 
MR 0492671[5] B. RZEPECKI: 
An existence theorem for bounded solutions of differential equations in Banach spaces. Rend. Sem. Mat. Univ. Padova 73 (1984). 
MR 0799899[6] B. N. SADOVSKII: 
Limit compact and condensing operators. Russian Math. Surveys 27 (1972), 86-144. 
MR 0428132[7] A. STOKES: 
The application of a fixed-point theorem to a variety of nonlinear stability problems. Proc. Nat. Acad. Sci. U.S.A. 45 (1959), 231-235. 
MR 0104006