VIBRATION-ROTATION OPERATORS OF THE FORM Q²J².BIRSS FW.1976; MOLEC. PHYS.; G.B.; DA. 1976; VOL. 31; NO 2; PP. 491-500; BIBL. 12 REF.Article

THE USE OF SECOND DERIVATIVES IN THE LEAST-SQUARES METHODBIRSS FW.1983; JOURNAL OF MOLECULAR SPECTROSCOPY; ISSN 0022-2852; USA; DA. 1983; VOL. 99; NO 1; PP. 133-142; BIBL. 8 REF.Article

RATIONAL ORBITALS FOR ³S STATES OF TWO-ELECTRON SYSTEMS.BIRSS FW; CHOI JH.1975; J. CHEM. PHYS.; U.S.A.; DA. 1975; VOL. 63; NO 3; PP. 1280-1284; BIBL. 5 REF.Article

CONFIGURATION INTERACTION WAVEFUNCTIONS FOR ³S EXCITED STATES OF HELIUM.BIRSS FW; SENN P.1975; J. CHEM. PHYS.; U.S.A.; DA. 1975; VOL. 63; NO 3; PP. 1276-1279; BIBL. 4 REF.Article

A SINGLE MATHEMATICAL FORM OF INTERCHANGE THEOREMS.BIRSS FW; CHOI JH.1974; J. CHEM. PHYS.; U.S.A.; DA. 1974; VOL. 60; NO 10; PP. 4090; BIBL. 6 REF.Article

SEMI-EMPIRICAL CONFIGURATION INTERACTION STUDIES ON THE PI -ELECTRON SPECTRA OF NONBENZENOID MOLECULES.DAS GUPTA NK; BIRSS FW.1978; BULL. CHEM. SOC. JAP.; JPN; DA. 1978; VOL. 51; NO 4; PP. 1211-1219; BIBL. 53 REF.Article

RATIONAL ORBITALS FOR TWO-ELECTRON ¹S STATESBIRSS FW; DEN HERTOG W.1981; CAN. J. CHEM.; ISSN 0008-4042; CAN; DA. 1981; VOL. 59; NO 10; PP. 1552-1556; ABS. FRE; BIBL. 7 REF.Article

FURTHER HIGH RESOLUTION STUDIES OF THE A³A₂-X¹A₁ SYSTEM OF FORMALDEHYDEBIRSS FW; RAMSAY DA; TILL SM et al.1978; CANAD. J. PHYS.; CAN; DA. 1978; VOL. 56; NO 6; PP. 781-785; ABS. FRE; BIBL. 25 REF.Article

SINGLET-TRIPLET PERTURBATION IN FORMALDEHYDE.BIRSS FW; RAMSAY DA; TILL SM et al.1978; CHEM. PHYS. LETTERS; NETHERL.; DA. 1978; VOL. 53; NO 1; PP. 14-17; BIBL. 10 REF.Article

A NEW METHOD FOR BAND CONTOUR ANALYSIS WITH APPLICATION TO THE SPECTRUM OF PYRIDINE-4-D₁BIRSS FW; COLSON SD; RAMSAY DA et al.1973; CANAD. J. PHYS.; CANADA; DA. 1973; VOL. 51; NO 10; PP. 1031-1038; H.T. 1; ABS. FR.; BIBL. 9 REF.Serial Issue

THE EFFECTIVE VIBRATION-ROTATION HAMILTONIAN FOR TRIPLY-DEGENERATE FUNDAMENTALS OF TETRAHEDRAL XY₄ MOLECULES.ROBIETTE AG; GRAY DL; BIRSS FW et al.1976; MOLEC. PHYS.; G.B.; DA. 1976; VOL. 32; NO 6; PP. 1591-1607; BIBL. 43 REF.Article

HIGH RESOLUTION STUDIES OF THE A¹A₂-X¹A₁ SYSTEM OF ¹³C-FORMALDEHYDEBIRSS FW; GORDON RM; RAMSAY DA et al.1979; CAN. J. PHYS.; ISSN 0008-4204; CAN; DA. 1979; VOL. 57; NO 10; PP. 1676-1680; ABS. FRE; BIBL. 25 REF.Article

THE MAGNETIC ROTATION OF THIOFORMALDEHYDE: SINGLET TRIPLET PERTURBATIONS IN THE A¹A₂ STATECLOUTHIER DJ; MOULE DC; RAMSAY DA et al.1982; CAN. J. PHYS.; ISSN 0008-4204; CAN; DA. 1982; VOL. 60; NO 9; PP. 1212-1222; ABS. FRE; BIBL. 15 REF.Article

MOLECULAR CONSTANTS FOR THE GROUND STATE OF NH₂BIRSS FW; RAMSAY DA; ROSS SC et al.1979; J. MOLEC. SPECTROSC.; USA; DA. 1979; VOL. 78; NO 2; PP. 344-346; BIBL. 12 REF.Article

THE 020 LEVEL IN THE GROUND STATE OF NH₂BIRSS FW; MERIENNE LAFORE MF; RAMSAY DA et al.1981; J. MOL. SPECTROSC.; ISSN 0022-2852; USA; DA. 1981; VOL. 85; NO 2; PP. 493-495; BIBL. 15 REF.Article

DETERMINATION OF THE GROUND STATE ROTATIONAL CONSTANTS FOR FORMALDEHYDE: H₂¹²CO AND H₂¹³COWINNEWISSER G; CORNET RA; BIRSS FW et al.1979; J. MOLEC. SPECTROSC.; USA; DA. 1979; VOL. 74; NO 2; PP. 327-329; BIBL. 14 REF.Article