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TRANSVERSE INSTABILITY OF SOLITON SOLUTIONS TO NON LINEAR SCHROEDINGER EQUATIONSANDERSON D; BONDESON A; LISAK M et al.1979; J. PLASMA PHYS.; GBR; DA. 1979; VOL. 21; NO 2; PP. 259-266; BIBL. 11 REF.Article

FONCTIONS D'ESSAI POUR LE CALCUL DE L'ETAT FONDAMENTAL DE L'ATOME D'HELIUMSOLODUKHIN AM.1978; VESCI AKAD. NAVUK B.S.S.R., FIZ.-MAT. NAVUK; BYS; DA. 1978; NO 5; PP. 79-95; ABS. ENG; BIBL. 13 REF.Article

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VARIATIONAL FUNCTIONS OF THE PADE TYPE. APPLICATION TO THE GROUND STATE OF THE HELIUM ATOMJOLLY P; SAXENA RP; SRIVASTAVA PK et al.1980; INT. J. QUANTUM. CHEM.; ISSN 0020-7608; USA; DA. 1980; VOL. 18; NO 3; PP. 689-694; ABS. FRE/GER; BIBL. 9 REF.Article

FONCTIONS D'ESSAI H-REGULIERES POUR L'ETAT FONDAMENTAL DE L'ATOME D'HELIUMRESHETNYAK VI.1977; VESCI AKAD. NAVUK B.S.S.R., FIZ. MAT. NAVUK; S.S.S.R.; DA. 1977; NO 4; PP. 62-69; BIBL. 8 REF.Article

TRIAL FUNCTIONS IN VARIATIONAL APPROXIMATIONS TO LONG-WAVELENGTH SCATTERINGFEINSTEIN MR; FARRELL RA.1982; J. OPT. SOC. AM. (1930); ISSN 0030-3941; USA; DA. 1982; VOL. 72; NO 2; PP. 223-231; BIBL. 23 REF.Article

VARIATIONAL PRINCIPLES FOR SCATTERING OPERATORSMIRAGLIA JE.1982; PHYS. REV. A; ISSN 0556-2791; USA; DA. 1982; VOL. 26; NO 1; PP. 309-314; BIBL. 12 REF.Article

CONSTRAINTS AND THE HELLMANN-FEYNMAN THEOREMEPSTEIN ST.1980; THEOR. CHIM. ACTA; DEU; DA. 1980; VOL. 55; NO 3; PP. 251-253; BIBL. 8 REF.Article

SOME REMARKS ABOUT A TRIAL WAVE FUNCTION FOR THE GROUND STATE OF TWO-ELECTRON ATOMSCASTRO EA.1979; REV. BRAS. FIS.; BRA; DA. 1979; VOL. 9; NO 3; PP. 705-707; ABS. POR; BIBL. 4 REF.Article

VARIATIONAL APPROACH TO STRONGLY NONLINEAR SCHROEDINGER EQUATIONSANDERSON D; BONNEDAL M; LISAK M et al.1979; PHYS. OF FLUIDS; USA; DA. 1979; VOL. 22; NO 4; PP. 788-789; BIBL. 10 REF.Article

OPTICAL POTENTIAL APPROACH TO THE CALCULATION OF VIB-ROTATIONAL RELAXATION RATES.GERBER RB; ZARITSKY NC; MINGLERIN U et al.1978; MOLEC. PHYS.; GBR; DA. 1978; VOL. 35; NO 5; PP. 1247-1268; BIBL. 28 REF.Article

IMPACT-PARAMETER METHOD FOR PROTON-HYDROGEN-ATOM SCATTERING VARIATIONAL BOUNDS ON THE 1S CHARGE-EXCHANGE AMPLITUDES.STORM D; RAPP D.1976; PHYS. REV., A; U.S.A.; DA. 1976; VOL. 14; NO 1; PP. 193-203; BIBL. 35 REF.Article

ON THE CONVERGENCE BEHAVIOUR OF THE PADE TYPE VARIATIONNAL FUNCTIONSJOLLY P; SAXENA RP; SRIVASTAVA PK et al.1982; J. MOL. STRUCT.; ISSN 0022-2860; NLD; DA. 1982; VOL. 88; NO 1/2; PP. 191-200; BIBL. 5 REF.Article

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DETERMINATION OF THE GROUND STATE OF THREE-BODY SYSTEMS.THOMPSON KW.1978; PHYS. REV., A; USA; DA. 1978; VOL. 17; NO 5; PP. 1583-1591; BIBL. 33 REF.Article

VARIATIONAL WAVE FUNCTIONS FOR A SCREENED COULOMB POTENTIAL.GREENE RL; ALDRICH C.1976; PHYS. REV., A; U.S.A.; DA. 1976; VOL. 14; NO 6; PP. 2363-2366; BIBL. 7 REF.Article

HELIUM ATOM IN THE MOMENTUM REPRESENTATIONLOMBARDI JR.1982; J. PHYS. CHEM.; ISSN 0022-3654; USA; DA. 1982; VOL. 86; NO 18; PP. 3513-3517; BIBL. 16 REF.Article