P. Cassam-chena¨?chena¨? and J. Liévin, Alternative perturbation method for the molecular vibration???rotation problem, International Journal of Quantum Chemistry, vol.93, issue.3, pp.245-264, 2003.
DOI : 10.1002/qua.10556

P. Cassam-chena¨?chena¨?, Ab initio predictions for the Q-branch of the methane vibrational ground state, Journal of Quantitative Spectroscopy and Radiative Transfer, vol.82, issue.1-4, pp.251-277, 2003.
DOI : 10.1016/S0022-4073(03)00157-2

D. Bégué, C. Pouchan, N. Gohaud, P. Cassam-chena¨?chena¨?, and J. Liévin, A comparison of two methods for selecting vibrational configuration interaction spaces on a heptatomic system: Ethylene oxide, The Journal of Chemical Physics, vol.127, issue.16, pp.164115-164124, 2007.
DOI : 10.1063/1.2795711

P. Cassam-chena¨?chena¨? and Y. Scribano, Influence of kinetic coupling in rectilinear coordinates on the vibrational spectrum of fluoroform, Chemical Physics Letters, vol.466, issue.1-3, p.16, 2008.
DOI : 10.1016/j.cplett.2008.10.025

P. Cassam-chena¨?chena¨?, The electronic mean-field configuration interaction method. I. Theory and integral formulas, The Journal of Chemical Physics, vol.124, issue.19, pp.194109-194123, 2006.
DOI : 10.1063/1.2196039

P. Cassam-chena¨?chena¨? and G. Granucci, The electronic mean field configuration interaction method: II ??? Improving guess geminals, Chemical Physics Letters, vol.450, issue.1-3, pp.151-155, 2007.
DOI : 10.1016/j.cplett.2007.10.107

P. Cassam-chena¨?chena¨? and V. Rassolov, The electronic mean field configuration interaction method: III ??? the <mml:math altimg="si46.gif" display="inline" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mrow><mml:mi>p</mml:mi></mml:mrow></mml:math>-orthogonality constraint, Chemical Physics Letters, vol.487, issue.1-3, pp.147-152, 2010.
DOI : 10.1016/j.cplett.2010.01.033

P. Cassam-chena¨?chena¨? and J. Liévin, The VMFCI method: A flexible tool for solving the molecular vibration problem, Journal of Computational Chemistry, vol.99, issue.5, pp.627-640, 2006.
DOI : 10.1002/jcc.20374

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J. M. Bowman, K. Christoffel, and F. Tobin, Application of SCF-SI theory to vibrational motion in polyatomic molecules, The Journal of Physical Chemistry, vol.83, issue.8, pp.905-912, 1979.
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P. Cassam-chena¨?chena¨? and F. Patras, The Hopf algebra of identical, fermionic particle systems???Fundamental concepts and properties, Journal of Mathematical Physics, vol.44, issue.11, pp.4884-4906, 2003.
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P. Cassam-chena¨?chena¨?, F. Pauzat, and Y. Ellinger, Electronic and vibronic dipole moments of CH2D+, Journal of Molecular Structure: THEOCHEM, vol.330, issue.1-3, p.167, 1995.
DOI : 10.1016/0166-1280(94)03834-8

A. V. Nikitin, M. Rey, . G. Vl, and . Tyuterev, Rotational and vibrational energy levels of methane calculated from a new potential energy surface, Chemical Physics Letters, vol.501, issue.4-6, p.179, 2011.
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R. Dawes and T. Carrington, How to choose one-dimensional basis functions so that a very efficient multidimensional basis may be extracted from a direct product of the one-dimensional functions: Energy levels of coupled systems with as many as 16 coordinates, The Journal of Chemical Physics, vol.122, issue.13, p.134101, 2005.
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P. Cassam-chena¨?chena¨? and J. Liévin, The original quartic PES of CHOOH was going to ?? beyond a barrier of only 600 cm ?1 in the (Q 1 ,Q 9 )-plane. To improve the PES, a grid of ab initio points in the range, Q1 = +/ ? 25 au was constructed and fitted to an 8 th order polynomial. Other common methods, such as morsification of normal coordinates, were not found satisfactory