Gilbarg, D., & Trudinger, N. S. (1977). Elliptic partial differential equations of second order. Springer-Verlag.
Dyfyniad Arddull ChicagoGilbarg, David, and Neil S. Trudinger. Elliptic Partial Differential Equations of Second Order. Berlin ; New York: Springer-Verlag, 1977.
Dyfyniad MLAGilbarg, David, and Neil S. Trudinger. Elliptic Partial Differential Equations of Second Order. Springer-Verlag, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.