C.O., O., A. O. J., O. M.C., and C.-O. P.U. “Impact of Mixed Fillers on the Physico-Mechanical Properties of Flexible Polyether Foam”. Organic Polymer Material Research, vol. 3, no. 1, June 2021, pp. 17-23, doi:10.30564/opmr.v3i1.3604.