Baiulescu, G.E. (George E.)
John Wiley & Sons, 1977
Buku Teks
Kirsten, Wolfgang J.
Academic Press, 1983
Buku Teks
Openshaw, H.T.
Cambridge University Press, 1962
Buku Teks
Siggia, Sidney
John Wiley & Sons, 1979
Buku Teks
Feigl, Fritz
Elsevier, 1960
Buku Teks