THE NUMBER OF DIRICHLET SOLUTIONS TO A CLASS OF LINEAR ORDINARY DIFFERENTIAL EQUATIONSKAUFFMAN RM.1979; J. DIFFER. EQUATIONS; USA; DA. 1979; VOL. 31; NO 1; PP. 117-129; BIBL. 6 REF.Article

A WEYL THEORY FOR A CLASS OF ELLIPTIC BOUNDARY VALUE PROBLEMS ON A HALF-SPACEKAUFFMAN RM.1981; NORTH-HOLL. MATH. STUD.; ISSN 0304-0208; NLD; DA. 1981; NO 55; PP. 267-278; BIBL. 7 REF.Conference Paper

NON-NORMALIZABLE EIGENFUNCTION EXPANSIONS FOR ORDINARY DIFFERENTIAL OPERATORSKAUFFMAN RM.1982; LECTURE NOTES IN MATHEMATICS; ISSN 0075-8434; DEU; DA. 1982; NO 964; PP. 362-367; BIBL. 2 REF.Conference Paper

A DIFFERENTIABILITY PROPERTY AND ITS APPLICATION TO THE SPECTRAL THEORY OF DIFFERENTIAL OPERATORSKAUFFMAN RM.1981; PROC. R. SOC. EDINB., SECT. A, MATH.; ISSN 0308-2105; GBR; DA. 1981; VOL. 88; NO 1-2; PP. 49-74; BIBL. 6 REF.Article

ON THE MINIMIZATION OF SINGULAR QUADRATIC FUNCTIONALSBRADLEY JS; HINTON DB; KAUFFMAN RM et al.1981; PROC. R. SOC. EDINB. SECT. A. MATH.; ISSN 0308-2105; GBR; DA. 1981; VOL. 87; NO 3-4; PP. 193-208; BIBL. 32 REF.Article

THE DEFICIENCY INDEX PROBLEM FOR POWERS OF ORDINARY DIFFERENTIAL EXPRESSIONS.KAUFFMAN RM; READ TT; ZETTL A et al.1977; LECTURE NOTES MATH.; GERM.; DA. 1977; NO 621; PP. (118P.); BIBL. 12 P.; ISBN 3540085238Serial Issue