[1] J.  DANEŠ: 
On densifying and related mappings and their applications in nonlinear functional analysis. Theory of nonlinear operators, Akademie-Verlag, Berlin 1974, 15-56. 
MR 0361946[2] H. P. HEINZ: 
On the behaviour of measures of noncompactness with respect to differentiation and integration of vector-valued functions. Nonlinear Analysis 7 (1983), 1351-1371. 
MR 0726478 | 
Zbl 0528.47046[3] S. SZUFLA: 
On the existence of $L^p$-solutions of Volterra integral equations in Banach spaces. Funkcialaj Ekvac 27 (1984). 
MR 0775204[4] S. SZUFLA: 
An existence theorem for the Urysohn integral equation in Banach spaces. Comment. Math. Univ. Carolinae 25 (1984), 19-27. 
MR 0749113 | 
Zbl 0578.45018