Rational approximations and orthogonality by Nikišin, Evgenij M., Sorokin, Vladimir N. fromTranslations of mathematical monographs 0 Type: Book
Rational approximation of real functions by Petrušev, Penčo P., Popov, Vasil A. fromEncyclopedia of mathematics and its applications 0 Type: Book
Rational approximation of real functions by Petrushev, P. P., (Penco Petrov), Popov, Vasil A., (Vasil Atanasov) fromEncyclopedia of mathematics and its applications 0 Type: Book
