You may also wish to search for items by Evans, S. and Evans.
Only one matching reference was found.
Nash, R.J.; Goldstein, W.S.; Evans, S.V.; Fellows, L.E., Gas chromatographic method for separation of nine polyhydroxy alkaloids, J. Chromatogr., 1986, 366, 431-434, https://doi.org/10.1016/S0021-9673(01)93497-1 . [all data]