Sułek, M. W., J. Janiszewska, K. Kurzepa, and B. Mirkowska. “The Effect of Anionic Surfactant – Polyvinylpyrrolidone Complexes Formed in Aqueous Solutions on Physicochemical and Functional Properties of Shampoos”. Polimery, vol. 63, no. 7-8, Jan. 2021, pp. 549-56, doi:10.14314/polimery.2018.7.10.