@article{Defrees1989, <br/>
            author = { Defrees, D. J.  and McLean, A. D. } ,<br/>title = "{A priori predictions of the rotational constants for HC13N, HC15N, and C5O}"  ,<br/> journal = {Chemical Physics Letters} ,<br/> year = 1989 ,<br/> volume = 158 ,<br/> pages = {541 - 544}  ,<br/> doi = {10.1016/0009-2614(89)87386-5}  <br/> }