Davis, H. T. (1962). Introduction to nonlinear differential and integral equations. New York, NY.: Dover publications, Inc..
Παραπομπή Chicago StyleDavis, Harold T. Introduction to Nonlinear Differential and Integral Equations. New York, NY.: Dover publications, Inc., 1962.
Παραπομπή MLADavis, Harold T. Introduction to Nonlinear Differential and Integral Equations. New York, NY.: Dover publications, Inc., 1962.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.