Nielsen, A. T.; Atkins, R. L.; Moore, D. W.; Scott, R. Mallory, D.; LaBerge, J. M.
"Structure and Chemistry of the Aldehyde Ammonias. 1-Amino-1-alkanols, 2,4,6-Trialkyl-1,3,5-hexahydrotriazines, and N,N-Dialkylidene-1,1-Diaminoalkanes" Journal of Organic Chemistry, 1973, volume 38, pp 3288 - 3295; doi:10.1021/jo00959a010