1. K. Zawischa, ?Über die Differentialgleichung y?=kf(x, y) deren Lösungskurve durch zwei gegebene Punkte hindurchgehen soll,? Montsch. Math. Phys.,37, No. 5, 103?124 (1930).
2. A. V. Kibenko, ?The method of successive approximations in a two-point boundary-value problem for an equation with a parameter,? Uch. Zap. Azerb. Univ., Ser. Fiz.-Mat. Khim. Nauk, No. 6, 13?21 (1961).
3. A. V. Kibenko and A. I. Perov, ?Some existence theorems for a two-point boundary-value problem with a parameter,? Tr. Sem. Funkts. Anal. Voronezhsk. Univ., No. 7, 52?58 (1963).
4. Z. B. Seidov, ?Boundary-value problems with a parameter for differential equations in a Banach space,? Sib. Mat. Zh.,9, No. 1, 223?228 (1968).
5. Z. B. Seidov, ?A boundary-value problem for systems of differential equations with delaying argument,? Ukr. Mat. Zh.,28, No. 5, 671?677 (1976).