Tham khảo Mầm (toán học)

    • Nicolas Bourbaki (1989). General Topology. Chapters 1-4 . Springer-Verlag. ISBN 3-540-64241-2., chapter I, paragraph 6, subparagraph 10 "Germs at a point".
    • Raghavan Narasimhan (1973). Analysis on Real and Complex Manifolds (ấn bản 2). North-Holland Elsevier. ISBN 0-7204-2501-8., chapter 2, paragraph 2.1, "Basic Definitions".
    • Robert C. Gunning and Hugo Rossi (1965). Analytic Functions of Several Complex Variables. Prentice-Hall., chapter 2 "Local Rings of Holomorphic Functions", especially paragraph A "The Elementary Properties of the Local Rings" and paragraph E "Germs of Varieties".
    • Ian R. Porteous (2001) Geometric Differentiation, page 71, Cambridge University Press ISBN 0-521-00264-8 .
    • Giuseppe Tallini (1973). Varietà differenziabili e coomologia di De Rham (Differentiable manifolds and De Rham cohomology). Edizioni Cremonese. ISBN 88-7083-413-1., paragraph 31, "Germi di funzioni differenziabili in un punto P {\displaystyle P} di V n {\displaystyle V_{n}} (Germs of differentiable functions at a point P {\displaystyle P} of V n {\displaystyle V_{n}} )" (in Italian).