TY  - BOOK
AU  - Mazur, Barry
AU  - Messing, William
TI  - Universal extensions and one dimensional crystalline cohomology
T2  - Lecture Notes in Mathematics, No.0370
U1  - R  LNM.0370 
PY  - 1974///
CY  - Springer-Verlag, Berlin
KW  - Lecture Notes in Mathematics
ER  -