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2. D. D. Radev, L. Pramatarova, M. Marinov, Titanium and Nickel-based Alloys for Medical Application, obtained by a Powder Metallurgy Technique, Journal of Optoelectronics and Advanced Materials, v.11, 10, 2009, 1525-1528

3. D. D. Radev, Mechanical synthesis of nanostructured titanium–nickel alloys, Advanced Powder Technology, Volume 21, Issue 4, July 2010, Pages 477-482

4. D. D. Radev, Nickel-Containing Alloys for Medical Application Obtained by Methods of Mechanochemistry and Powder MetallurgyISRN Metallurgy, Volume 2012 (2012), Article ID 464089, 6 pages

5. D. D. Radev et al., Untraditional Synthesis of Ni-Based Alloys for Medical Application, ARPN Journal of Engineering and Applied Sciences, VOL. 8, NO. 4, APRIL 2013, 270276

6. D.Radev, M.Marinov, J.Abraham, Powder Metallurgy: Eco-friendly and Highly-efficient Technology for Dental Alloy Production, Indian Dentist, 9, 6, 2015, 26-29 ISSN: 973-74997