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Pergamon Press, 1966
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Hemmo, Meir, author
Cambridge University Press, 2012
Buku Teks
edited by Frank A.J.L. James
Institution of Engineering and Technology, 2008
eBooks
Siregar, Porkas M., author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1990
UI - Skripsi Membership
Luthfi Azmaiza Hadsyah, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2018
UI - Skripsi Membership