Rudenko, Natalia, Alexander Laptev, and Leonid Popivnenko. 2012. “INFLUENCE OF COPPER ADDITIVE ON PRESSING AND BENDING STRENGTH OF IRON BASED HIGHLY POROUS POWDER MATERIALS”. Mechanical Testing and Diagnosis 2 (3), 55-59. https://gup.ugal.ro/ugaljournals/index.php/mtd/article/view/2552.