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Dyfyniad Arddull ChicagoZeidler, Eberhard. Nonlinear Functional Analysis and Its Applications. New York: Springer-Verlag, 1985.
Dyfyniad MLAZeidler, Eberhard. Nonlinear Functional Analysis and Its Applications. New York: Springer-Verlag, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.