@article { ISI:000269926200012,
	title = {Intermediate hamiltonian hilbert space coupled cluster method: theory and pilot application},
	journal = {International Journal of Quantum Chemistry},
	volume = {109},
	number = {13},
	year = {2009},
	month = {NOV},
	pages = {2909-2915},
	publisher = {JOHN WILEY \& SONS INC},
	address = {111 RIVER ST, HOBOKEN, NJ 07030 USA},
	abstract = {<p>The intermediate Hamiltonian state universal (Hilbert-space) coupled-cluster method is presented, using a formalism similar to that developed for the valence universal (Fock-space) approach. The method is expected to be applicable to many states not accessible by traditional multiroot multireference all-order size-extensive approaches. A pilot application to excited states of atomic beryllium shows good convergence and agreement with experiment and full CI values. (C) 2009 Wiley Periodicals, Inc. Int J Quantum Chem 109: 2909-2915, 2009</p>},
	keywords = {coupled cluster, Hilbert space, intermediate Hamiltonian},
	issn = {0020-7608},
	doi = {10.1002/qua.22155},
	author = {Eliav, Ephraim and Borschevsky, Anastasia and Shamasundar, K. R. and Pal, Sourav and Kaldor, Uzi}
}
@proceedings {42678,
	title = {On some aspects of fock-space multi-reference coupled-cluster singles and doubles energies and optical properties},
	volume = {11},
	year = {2010},
	month = {APR},
	pages = {375-393},
	publisher = {Springer},
	address = {Netherlands},
	author = {Manohar, Prashant Uday and Shamasundar, K. R. and Bag, Arijit and Vaval, Nayana and Pal, Sourav}
}
