TY  - BOOK
AU  - Mazur,Barry
AU  - Messing,William
TI  - Universal extensions and one dimensional crystalline cohomology
SN  - 0387066594
PY  - 1974///
CY  - Berlin
PB  - Springer-Verlag
KW  - Abelian varieties
KW  - Group schemes (Mathematics)
KW  - Homology theory
KW  - Lie algebras
N1  - Bibliography: p. 133-134
ER  -