On approximation properties of the generalized sampling operatorsTamberg, GertFunctional Methods in Approximation Theory and Operator Theory III : August 22-26, 2009, Volyn, Ukraine2009 / p. 93-94 On approximation properties of the generalized sampling operatorsTamberg, GertInternational Conference on Wavelets and Applications : June 18-23, 2015, Euler International Mathematical Institute, St. Petersburg, Russia2015 / p. 92-94