1. Bloch, S., Lieberman, D., Kas,A.: 0-cycles on algebraic surfaces withP g =0. To appear
2. Lang, S.: Abelian varieties. New York: Interscience-Wiley 1959
3. Mumford, D.: Rational equivalence of 0-cycles on surfaces. J. Math. Kyoto Univ.9, 195?204 (1968)
4. Roitman, A.A.: ?-equivalence of zero-dimensional cycles. Mat. Sb.86 (128), 557?570 (1971)= Math. USSR Sb.15, 555?567 (1971)
5. Roitman, A.A.: Rational equivalence of zero-cycles. Math. USSR Sb.18 no. 4, 571?588 (1972)