Akimbaeva, N., I. Anuarbekova, J. Asylhanov, R. Ermagambetov, and K. Erzhanov. “Search of New Surfactants on the Basis of Secondary Amines”. Chemical Bulletin of Kazakh National University, Vol. 67, no. 3, Sept. 2012, pp. 44-47, doi:https://doi.org/10.15328/chemb_2012_344-47.