Desai, Chandrakant S., author
Van Nostrand Reinhold, 1972
Buku Teks
Axelsson, O., author
Society for Industrial and Applied Mathematics, 2001
eBooks
Kikuchi, Noboru, author
Society for Industrial and Applied Mathematics, 1988
eBooks
Ural, Oktay
Intext Press, 1973
Buku Teks
Strang, Gilbert, author
Prentice-Hall, 1973
Buku Teks