Herbin, P., Blanquet, G., Walrand, J., Courtoy, CP., & Fayt, A. (1982). Infrared-spectra of C2h3d in the Region Between 728-cm-1 and 907-cm-1. Journal of Molecular Spectroscopy, 93(2), 389-394. https://doi.org/10.1016/0022-2852(82)90174-6 (Original work published 1982)