ASYMPTOTIC BOUNDARY-CONDITIONS FOR EXPANSION THEOREMS FOR BOUNDARY EIGENVALUE PROBLEMS OF THE FORM N(Y)=LAMBDA-P(Y) WITH LAMBDA-DEPENDING BOUNDARY-CONDITIONS
C. Tretter, ASYMPTOTIC BOUNDARY-CONDITIONS FOR EXPANSION THEOREMS FOR BOUNDARY EIGENVALUE PROBLEMS OF THE FORM N(Y)=LAMBDA-P(Y) WITH LAMBDA-DEPENDING BOUNDARY-CONDITIONS, Zeitschrift fur angewandte Mathematik und Mechanik, 73(7-8), 1993, pp. 200000769-200000773