TY - JOUR AU - Feinerman, Robert TI - Triple orthogonal series JO - Glasgow mathematical journal PY - 1979 SP - 49 EP - 53 VL - 20 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500003712/ DO - 10.1017/S0017089500003712 ID - 10_1017_S0017089500003712 ER -