@MISC{Psi3,
  author =       "T. D. Crawford and C. D. Sherrill and E. F. Valeev
		  and J. T. Fermann and R. A. King and M. L. Leininger
		  and S. Brown and C. L. Janssen and E. T. Seidl and
		  Joseph P. Kenny and W. D. Allen",
  title =        "{PSI 3.2}",
  year =         2003,
}

@ARTICLE {Roos:1980,
   author = "B. O. Roos and P. R. Taylor and P. E. M. Siegbahn",
   title = "A Complete Active Space {SCF} Method ({CASSCF}) Using a Density
      Matrix Formulated Super-{CI} Approach",
   journal = "Chem. Phys.",
   volume = "48",
   pages = "157",
   year = "1980"
   }

@ARTICLE {Chaban:1997:88,
   author = "G. Chaban and M. W. Schmidt and M. S. Gordon",
   title = "Approximate second order method for orbital optimization of {SCF}
      and {MCSCF} wavefunctions",
   journal = "Theor. Chem. Acc.",
   volume = "97",
   pages = "88-95",
   year = "1997"
   }

@ARTICLE {Pulay:1980,
   author = "P. Pulay",
   title = "Convergence Acceleration of Iterative Sequences.  The Case of 
      {SCF} Iteration",
   journal = "Chem. Phys. Lett.",
   volume = "73",
   pages = "393-398",
   year = "1980"
   }

@ARTICLE {Malmqvist:1990:RASSCF,
   author = "P.-{\AA}. Malmqvist and A. Rendell and B. O. Roos",
   title = "The Restricted Active Space Self-Consistent-Field Method,
      Implemented with a Split Graph Unitary Group Approach",
   journal = "J. Phys. Chem.",
   volume = "94",
   pages = "5477-5482",
   year = "1990"
   }

@ARTICLE {Docken:1972:4928,
   author = "K. K. Docken and J. Hinze",
   title = "{LiH} Potential Curves and Wavefunctions for {$X$ $^1\Sigma^+$},
      {$A$ $^1\Sigma^+$}, {$B$ $^1\Pi$}, {$^3\Sigma^+$}, and {$^3\Pi^*$}",
   journal = "J. Chem. Phys.",
   volume = "57",
   number = "11",
   pages = "4928-4936",
   year = "1972"
   }

@ARTICLE {Ruedenberg:1979:1069,
   author = "K. Ruedenberg and L. M. Cheung and S. T. Elbert",
   title = "{MCSCF} Optimization through Combined Use of Natural Orbitals and
      the {Brillouin-Levy-Berthier} Theorem",
   journal = "Int. J. Quantum Chem.",
   volume = "16",
   pages = "1069-1101",
   year = "1979"
   }

@ARTICLE {Handy:1980,
   author = "N. C. Handy",
   title = "Multi-Root Configuration Interaction Calculations",
   journal = "Chem. Phys. Lett.",
   volume = "74",
   pages = "280",
   year = "1980"
   }

@ARTICLE {Olsen:1988,
   author = "J. Olsen and B. O. Roos and P. J{\o}rgensen and H. J.
      {Aa.~Jensen}",
   title = "Determinant based configuration interaction algorithms for
      complete and restricted configuration interaction spaces",
   journal = "J. Chem. Phys.",
   volume = "89",
   pages = "2185",
   year = "1988"
   }

