Giacaglia, G. E. O. (1972). Perturbation methods in non-linear systems. Springer.
Dyfyniad Arddull ChicagoGiacaglia, Giorgio E. O. Perturbation Methods in Non-linear Systems. New York: Springer, 1972.
Dyfyniad MLAGiacaglia, Giorgio E. O. Perturbation Methods in Non-linear Systems. Springer, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.