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USEFUL EXTREMUM PRINCIPLE FOR THE VARIATIONAL CALCULATION OF MATRIX ELEMENTS. II.GERJUOY E; ROSENBERG L; SPRUCH L et al.1975; J. MATH. PHYS.; U.S.A.; DA. 1975; VOL. 16; NO 3; PP. 455-461; BIBL. 6 REF.Article

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STATIONARY AND QUASISTATIONARY BOUNDS ON ARBITRARY BOUND-STATE MATRIX ELEMENTS.BLAU R; RAU ARP; SPRUCH L et al.1973; PHYS. REV., A; U.S.A.; DA. 1973; VOL. 8; NO 1; PP. 131-137; BIBL. 20 REF.Article

A DECOMPOSITION THEOREM FOR FINITE-DIMENSIONAL HERMITIAN PROJECTIONSGIANNONI MJ.1981; J. MATH. PHYS. (N.Y.); ISSN 0022-2488; USA; DA. 1981; VOL. 22; NO 2; PP. 352-356; BIBL. 15 REF.Article

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SU(3) IN AN O(3) BASIS. II. SOLUTION OF THE STATE LABELLING PROBLEMHUGHES JWB.1973; J. PHYS., A; G.B.; DA. 1973; VOL. 6; NO 3; PP. 281-298; BIBL. 10 REF.Serial Issue

EXTENSION OF AN ITERATIVE METHOD TO OBTAIN LOW-LYING EIGENSTATES OF UNBOUNDED HERMITIAN OPERATORSKREUZER KG; MILLER HG; DREIZLER RM et al.1980; J. PHYS. A; GBR; DA. 1980; VOL. 13; NO 8; PP. 2645-2652; BIBL. 7 REF.Article

AN ITERATIVE METHOD FOR CALCULATING LOW LYING EIGENVALUES OF AN HERMITIAN OPERATOR.BERGER WA; MILLER HG; KREUZER KG et al.1977; J. PHYS. A; G.B.; DA. 1977; VOL. 10; NO 7; PP. 1089-1095; BIBL. 15 REF.Article

ON THE MATHEMATICAL FORM OF "INTERMEDIATE-OPERATORS" AS APPLIED TO THE HYPERVIRIAL THEOREMMUCCI JF.1979; LETTERE NUOVO CIMENTO; ITA; DA. 1979; VOL. 24; NO 13; PP. 468-470; BIBL. 11 REF.Article

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On the operator bases underlying Wigner's, Kirkwood's and Glauber's phase space functionsENGLERT, B.-G.Journal of physics. A, mathematical and general. 1989, Vol 22, Num 6, pp 625-640, issn 0305-4470Article

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AN APPLICATION OF THE CANONICAL ORTHONORMALIZATION TO A UNION OF COMPLTETE ATOMIC ORBITAL SETSSCHARFENBERG P.1981; CHEM. PHYS. LETT.; ISSN 0009-2614; NLD; DA. 1981; VOL. 78; NO 1; PP. 184-186; BIBL. 6 REF.Article

VARIATIONAL PROCEDURE YIELDING UPPER AND LOWER BOUNDS TO EIGENVALUES OF HERMITIAN OPERATORS.MULLER AMK.1978; PHYS. LETTERS, A; NETHERL.; DA. 1978; VOL. 65; NO 4; PP. 273-275; BIBL. 5 REF.Article

NEW STATIONARY BOUNDS ON MATRIX ELEMENTS INCLUDING POSITRON-ATOM SCATTERING LENGTHS.BLAU R; ROSENBERG L; SPRUCH L et al.1974; PHYS. REV., A; U.S.A.; DA. 1974; VOL. 10; NO 6; PP. 2246-2256; BIBL. 25 REF.Article

SIMPLE DERIVATION OF THE NEWTON-WIGNER POSITION OPERATORJORDAN TF.1980; J. MATH. PHYS.; USA; DA. 1980; VOL. 21; NO 8; PP. 2028-2032; BIBL. 12 REF.Article

GENERAL THEOREMS RELATING TO WAVE PROPAGATION GOVERNED BY SELF-ADJOINT AND HERMITIAN SELF-ADJOINT DIFFERENTIAL OPERATORS OF ORDER 2N.HEADING J.1978; PROC. R. SOC. LONDON, A; G.B.; DA. 1978; VOL. 360; NO 1701; PP. 279-300; BIBL. 26 REF.Article

Hermitian Fermi operators. Its representation, path-integral of Faddeev-Popov ghost and supersymmetry (BRS invariance)KASHIWA, T.Progress of theoretical physics. 1983, Vol 70, Num 4, pp 1124-1140, issn 0033-068XArticle

Extended Jaynes-Cummings models and (quasi)-exact solvabilityBRIHAYE, Yves; NININAHAZWE, Ancilla.Journal of physics. A, mathematical and general. 2006, Vol 39, Num 31, pp 9817-9830, issn 0305-4470, 14 p.Article