@article{kim_lee_2013, 
  title={Two-component Kramers restricted complete active space self-consistent field method with relativistic effective core potential revisited: Theory, implementation, and applications to spin-orbit splitting of lower p-block atoms}, 
  volume={139}, 
  DOI={10.1063/1.4822426}, 
  number={13}, 
  publisher={AIP Publishing}, 
  author={Kim and Lee}, 
  year={2013}, 
  month={Oct}
  }