“Calculus and Differential Operators.” Notes on Crystalline Cohomology. (MN-21), by Pierre Berthelot and Arthur Ogus, Princeton University Press, Princeton, New Jersey, 1978, pp. 2.1–2.23, www.jstor.org/stable/j.ctt130hk6f.5. Accessed 1 Aug. 2021.
Berthelot, P., & Ogus, A. (1978). Calculus and Differential Operators. In Notes on Crystalline Cohomology. (MN-21) (pp. 2.1-2.23). Princeton, New Jersey: Princeton University Press. Retrieved August 1, 2021, from http://www.jstor.org/stable/j.ctt130hk6f.5
Berthelot, Pierre, and Arthur Ogus. "Calculus and Differential Operators." In Notes on Crystalline Cohomology. (MN-21), 2.1-.23. Princeton, New Jersey: Princeton University Press, 1978. Accessed August 1, 2021. http://www.jstor.org/stable/j.ctt130hk6f.5.
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