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