You may also wish to search for items by Ward, D. and Ward.
Only one matching reference was found.
Lamkin, W.M.; Weatherford, J.W.; Jones, N.S.; Pan, T.; Ward, D.N., Analysis of methylthiohydantoines of amino acids by gas-liquid chromatography of their trimethylsilyl derivatives, Anal. Biochem., 1974, 58, 2, 422-438, https://doi.org/10.1016/0003-2697(74)90211-5 . [all data]