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ESTIMATE FOR THE DIFFERENCE OF THE SECOND DERIVATIVE OF PARTIAL SUMS ARISING BY NON-NEGATIVE SELFADJOINT EXTENSIONS OF STURM-LIOUVILLE OPERATORSJOO I; LAZETIC N.1981; ACTA MATH. ACAD. SCI. HUNG.; ISSN 0001-5954; HUN; DA. 1981; VOL. 38; NO 1-4; PP. 117-138; BIBL. 7 REF.Article

C*-ALGEBRAS OF SINGULAR INTEGRAL OPERATORS ON THE LINE RELATED TO SINGULAR STURM-LIOUVILLE PROBLEMSSOHRAB HH.1983; MANUSCRIPTA MATHEMATICA; ISSN 0025-2611; DEU; DA. 1983; VOL. 41; NO 1-3; PP. 109-138; BIBL. 15 REF.Article

STURM-LIOUVILLE EIGENPROBLEMS WITH AN INTERIOR POLEBOYD JP.1981; J. MATH. PHYS. (N.Y.); ISSN 0022-2488; USA; DA. 1981; VOL. 22; NO 8; PP. 1575-1590; BIBL. 22 REF.Article

TRACE REGULARISEE DE L'OPERATEUR DE STURM-LIOUVILLEDUBROVSKIJ VV.1980; DIFFER. URAVNEN.; BYS; DA. 1980; VOL. 16; NO 6; PP. 1127-1129; BIBL. 8 REF.Article

A THEOREM ON INFINITE PRODUCTS OF EIGENVALUES OF STURM-LIOUVILLE TYPE OPERATORS.LEVIT S; SMILANSKY U.1977; PROC. AMER. MATH. SOC.; U.S.A.; DA. 1977; VOL. 65; NO 2; PP. 299-302; BIBL. 6 REF.Article

DISSIPATIVE STURM-LIOUVILLE OPERATORSKNOWLES I.1981; PROC. R. SOC. EDINB., SECT. A, MATH.; ISSN 0308-2105; GBR; DA. 1981; VOL. 88; NO 3-4; PP. 329-343; BIBL. 12 REF.Article

PERTURBATIONS OF SELFADJOINT OPERATORS WITH POINT SPECTRA BY RESTRICTIONS AND SELFADJOINT EXTENSIONSSCHMUEDGEN K.1981; MATH. ANN.; ISSN 0025-5831; DEU; DA. 1981; VOL. 256; NO 2; PP. 233-248; BIBL. 17 REF.Article

A DIRECTED SET OF STURM-LIOUVILLE OPERATORSBENZINGER HE.1981; PROC. R. SOC. EDINB., SECT. A, MATH.; ISSN 0308-2105; GBR; DA. 1981; VOL. 90; NO 1-2; PP. 125-145; BIBL. 7 REF.Article

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Strong resolvent convergence of diffusion operatorsBENZINGER, H. E.SIAM journal on mathematical analysis. 1985, Vol 16, Num 4, pp 713-724, issn 0036-1410Article

ON THE LOCATION OF THE ESSENTIAL SPECTRA AND REGULARITY FIELDS OF COMPLEX STURM-LIOUVILLE OPERATORSRACE D.1980; PROC. R. SOC. EDINBURG, A; GBR; DA. 1980; VOL. 85; NO 1-2; PP. 1-14; BIBL. 13 REF.Article

An extension of Kotani's theorem to random generalized Sturm-Liouville operatorsMINAMI, N.Communications in mathematical physics. 1986, Vol 103, Num 3, pp 387-402, issn 0010-3616Article

Inverse Sturm-Liouville problems with two discontinuitiesWILLIS, C.Inverse problems. 1985, Vol 1, Num 3, pp 263-289, issn 0266-5611Article

A new asymptotic condition for absolutely continuous spectrum of the Sturm-Liouville operator on the half-lineAL-NAGGAR, I; PEARSON, D. B.Helvetica Physica Acta. 1994, Vol 67, Num 2, pp 144-166, issn 0018-0238Conference Paper

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Inverse spectral theory for a singular Sturm-Liouville operator on [0,1]GUILLOT, J.-C; RALSTON, J. V.Journal of differential equations (Print). 1988, Vol 76, Num 2, pp 353-373, issn 0022-0396Article

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Boundary conditions of Sturm-Liouville operators with mixed spectraDEL RIO, R; TCHEBOTAREVA, Olga.Journal of mathematical analysis and applications. 2003, Vol 288, Num 2, pp 518-529, issn 0022-247X, 12 p.Article

Eigenvalues variation. I: Neumann problem for Sturm-Liouville operatorsDAUGE, M; HELFFER, B.Journal of differential equations (Print). 1993, Vol 104, Num 2, pp 243-262, issn 0022-0396Article

Spectral theory of ordinary differential operatorsWEIDMANN, J.Lecture notes in mathematics. 1987, Vol 1258, issn 0075-8434, VI-303 pSerial Issue