Bundjali, B., Masykuri, M., Hartanti, F. W., & Arcana, I. M. (2018). Poly(urethane) synthesized from 9-ethoxy-1,10-octadecanediol obtained by modification of palm oil oleic acid. Journal of Mathematical and Fundamental Sciences, 50(1), 13-27. https://doi.org/10.5614/j.math.fund.sci.2018.50.1.2