Khavin, V., & Nikol'skij, N. (1991). Encyclopaedia of mathematical sciences. Germany: Springer.
Dyfyniad Arddull ChicagoKhavin, V.P.,, và N.K. Nikol'skij. Encyclopaedia of Mathematical Sciences. Germany: Springer, 1991.
Dyfyniad MLAKhavin, V.P.,, và N.K. Nikol'skij. Encyclopaedia of Mathematical Sciences. Germany: Springer, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.