TY - BOOK AU - Collatz L ed. ED - Conference on Numerical Methods of Approximation Theory( 1979 : Oberwolfach ) ED - Conference on Numerical Methods of Approximation Theory TI - Numerical methods of approximation theory: proceedings SN - 3-7643-1103-7 U1 - 511.4 PY - 1980/// CY - Basel PB - Birkhauser-Verlag KW - Approximation theory ER -