@article{Lee1978, <br/>
            author = { Lee, J. H.  and Michael, J. V. and  Payne, W. A. and  Stief, L. J. } ,<br/> journal = {Journal of Chemical Physics} ,<br/> year = 1978 ,<br/> volume = 69 ,<br/> pages = {3069-3076}  <br/> }