Gencel, O., W. Brostow, G. Martínez-Barrera, and M. S. Gok. 2012. “Mechanical Properties of Polymer Concretes Containing Different Amount of Hematite or Colemanite”. Polimery 57 (4):276-83. http://ichp.vot.pl/index.php/p/article/view/827.