Mazur, B., & Messing, W. (1974). Universal extensions and one dimensional crystalline cohomology. Springer.
Chicago Style (17th ed.) CitationMazur, Barry, and William Messing. Universal Extensions and One Dimensional Crystalline Cohomology. Berlin: Springer, 1974.
MLA (9th ed.) CitationMazur, Barry, and William Messing. Universal Extensions and One Dimensional Crystalline Cohomology. Springer, 1974.