Sęk, Jerzy, et al. “Analysis of the Effectiveness of Polypropylene Fibers Usage As Sorbents of Oil Spills Resulting from the Transport Accide”. Mokslas – Lietuvos Ateitis Science – Future of Lithuania, vol. 5, no. 5, Dec. 2013, pp. 536-40, https://doi.org/10.3846/mla.2013.84.