Nikje, M. M. A., et al. “Investigation of Fe304 AEAP Supermagnetic Nanoparticles on the Morphological, Thermal and Magnetite Behavior of Polyurethane Rigid Foam Nanocomposites”. Polimery, vol. 60, no. 1, Jan. 2015, pp. 26-32, doi:10.14314/polimery.2015.026.