@ARTICLE {DLSV96,
AUTHOR  = "{van Dam}, H. J. J. and {van Lenthe}, J. H. and 
           Sleijpen, G. L. G. and {van der Vorst}, H. A.", 
TITLE   = "An improvement of {D}avidson's iteration method", 
JOURNAL = "J.\ Comput.\ Chem.",
VOLUME  = "17, 3",
YEAR    =  1996, 
PAGES   = "267--272",}