TY - JOUR AU - Franz-Jürgen Delvos AU - H.-W. Kösters TI - On the Variational Characterization of Bivariate Interpolation Methods. JO - Mathematische Zeitschrift PY - 1975 SP - 129 EP - 138 VL - 145 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1975__145_172276/ ID - MZ_1975__145_172276 ER -