Ditters, E. J. (1969). Curves and exponential series in the theory of noncommutative formal groups. Katholieke Universiteit]. Faculteit der wiskunde en natuurwetenschappen (Wilhelminasingel 13).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDitters, Engelbertus Joseph. Curves and Exponential Series in the Theory of Noncommutative Formal Groups. [Nijmegen: Katholieke Universiteit]. Faculteit der wiskunde en natuurwetenschappen (Wilhelminasingel 13), 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDitters, Engelbertus Joseph. Curves and Exponential Series in the Theory of Noncommutative Formal Groups. Katholieke Universiteit]. Faculteit der wiskunde en natuurwetenschappen (Wilhelminasingel 13), 1969.
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