If you find this service (data) useful, please cite the following paper

Vujčič, V.; Jevremović, D.; Mihajlov, A. A.; Ignjatović, Lj. M.; Srećković, V. A.; Dimitrijević, M. S.; Malović, M. MOL-D: A Collisional Database and Web Service within the Virtual Atomic and Molecular Data Center

Journal of Astrophysics and Astronomy, 2015, Volume 36, Issue 4, pp.693-703