Lawden, D. F. (1959). Mathematics of engineering systems: (linear and non-linear) (2nd ed.). London : New York: Methuen John Wiley & Sons.
Παραπομπή Chicago StyleLawden, Derek F. Mathematics of Engineering Systems: (linear and Non-linear). 2nd ed. London : New York: Methuen John Wiley & Sons, 1959.
Παραπομπή MLALawden, Derek F. Mathematics of Engineering Systems: (linear and Non-linear). 2nd ed. London : New York: Methuen John Wiley & Sons, 1959.
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