edited by Minko Balkanski
North-Holland Publishing, 1980
Buku Referensi
Bassani, F.
Pergamon Press, 1975
Buku Teks SO
edited by Baldassare Di Bartolo
Plenum Press, 1992
Buku Teks SO
Dragoman, Daniela
Springer, 2002
Buku Teks SO
Hayes, William
John Wiley & Sons, 1978
Buku Teks SO