1. An existence theorem for a solution of f′ (x) = F (x,f (g (x)));Anderson;SIAM Rev.,1966
2. O nelineinych uravneniiach s vognutymi i ravnomerno vognutymi operatorami (Russian);Bakhtin;Dokl. Akad. Nauk SSSR,1959
3. O sušestvovanii obščich nepodvizhnych toček dlia abelevych sovokupnostei razryvnych operatorov (Russian);Bakhtin;Sibirsk. Mat. Zh.,1972
4. An elementary proof of the Hopf inequality for positive operators;Bauer;Numer. Math.,1965
5. Théorie générale des systèmes;Von Bertalanffy,1973