1. B. S. Kashin and A. A. Saakyan, Orthogonal Series [in Russian], Nauka, Moscow (1984).
2. Z. Ciesielski, ?Constructive function theory and spline systems,? Stud. Math.,53, 277?302 (1975).
3. Z. Ciesielski, ?Properties of the orthonormal Franklin system. II,? Stud. Math.,27, 289?323 (1966).
4. G. G. Gevorkyan, ?Unboundedness of the shift operator for the Franklin system in the space L1,? Mat. Zametki,38, No. 4, 523?533 (1985).
5. G. G. Gevorkyan, ?On Franklin series,? Analysis Math. (in press).