• [1] Ernst Kunz, Differentialformen inseparabler algebraischer Funktionenkörper, Math. Z. 76 (1961), 56–74 (German). MR 0136604 (25 #72)
• [2] Yoshikazu Nakai, On the theory of differentials in commutative rings, J. Math. Soc. Japan 13 (1961), 63–84. MR 0125131 (23 #A2437)
• [3] Pierre Samuel, Algèbre locale, Mémor. Sci. Math., no. 123, Gauthier-Villars, Paris, 1953 (French). MR 0054995 (14,1012c)
• [4] Oscar Zariski and Pierre Samuel, Commutative algebra. Vol. II, The University Series in Higher Mathematics, D. Van Nostrand Co., Inc., Princeton, N. J.-Toronto-London-New York, 1960. MR 0120249 (22 #11006)

Bibliography

[1]

E. Kunz, Differentialformen inseparable algebraischer Funktionenkörper, Math. Z. 76 (1961), 56-74. MR 0136604 (25:72)

[2]

Y. Nakai, On the theory of differentials in commutative rings, J. Math. Soc. Japan 13 (1961), 63-84. MR 0125131 (23:A2437)

[3]

P. Samuel, Algèbre locale, Memor. Sci. Math., No. 123, Gauthier-Villars, Paris, 1953. MR 0054995 (14:1012c)

[4]

O. Zariski and P. Samuel, Commutatative algebra, Vol. II, Van Nostrand, Princeton, N. J., 1960. MR 0120249 (22:11006)