Velikov, Angel, Ivanov Ivanov, and Ivan Georgiev. 2021. “STRUCTURAL INVESTIGATION OF THE INTERMEDIATE LAYER IN A BIMETAL MILL ROLLER PRODUCED BY THE METHOD OF VERTICAL AXIS CENTRIFUGAL CASTING”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June): 255-58. https://doi.org/10.17770/etr2021vol1.6533.