• Analysis of elemental composition of a heat activated, multi-force, nickel titanium othodontic archwirePetrunov, V.; Andreeva, Laura; Mikli, ValdekBulgarian chemical communications2015 / p. 229-233 : ill
• Corrosive changes and chemical composition of the orthodontic archwires' surface during treatmentPetrov, Valeri G.; Terzieva, Stanimira D.; Lazarova, Tz I.; Mikli, Valdek; Andreeva, Laura A.; Stoyanova-Ivanova, Angelina K.Bulgarian Chemical Communications2013 / p. 455 - 460 http://www.bcc.bas.bg/BCC_Volumes/Volume_45_Number_4_2013/Volume_45_Number_4_2013_PDF/BCC-45-4-2013_7.pdf https://www.scopus.com/sourceid/19700175454 https://www.scopus.com/record/display.uri?eid=2-s2.0-84898624599&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=AUTH%28Terzieva%2C+S.D.%29&sessionSearchId=1a41baf4d677f2631c89c8f4ec781d4d&relpos=1
• Elemental composition and structural characteristics of as-received TriTaniumTM orthodontic archwireIlievska, I.; Petrov, V.; Mihailov, V.; Karatodorov, S.; Andreeva, L.; Zaleski, A.; Mikli, Valdek; Gueorgieva, M.; Petrova, V.20th International Summer School on Vacuum, Electron and Ion Technologies (VEIT 2017), 25-29 September 2017, Sozopol, Bulgaria2018 / art. 012036, 5 p. : ill https://doi.org/10.1088/1742-6596/992/1/012036 https://www.scopus.com/sourceid/130053 https://www.scopus.com/record/display.uri?eid=2-s2.0-85045760427&origin=inward&txGid=73998f7037ed4dd8815dd979fe185888 https://www.webofscience.com/wos/woscc/full-record/WOS:000445817300036
• Influence of the treatment period on the morphology and the chemical composition of the thermally activated orthodontic archwiresPetrov, Valery; Terzieva, Stanimira; Tumbalev, V.; Mikli, Valdek; Andreeva, Laura; Stoyanova-Ivanova, AngelinaBulgarian chemical communications2015 / p. 234-238 : ill
• Nanoindentation and surface characterization of clinically retrieved multi-force niti orthodontic archwiresCherneva, Sabina; Stoyanova-Ivanova, Angelina K.; Georgieva, Mirela; Andreeva, Laura A.; Petkov, Alexander; Petrov, Valeri G.; Petrova, Violeta P.; Mikli, ValdekRussian Journal of Biomechanics2020 / p. 240-256 https://doi.org/10.15593/RJBiomech/2020.3.02 https://ered.pstu.ru/index.php/rjb/article/view/2303 https://www.scopus.com/sourceid/21100776473 https://www.scopus.com/record/display.uri?eid=2-s2.0-85100447700&origin=resultslist&sort=plf-f&src=s&sid=b857602a17e83bb63f848767b8d1540d&sot=b&sdt=b&s=TITLE-ABS-KEY%28%22nanoindentation+and+surface%22%29&sl=53&sessionSearchId=b857602a17e83bb63f848767b8d1540d&relpos=2
• Physicochemical characterization on clinically retrieved TriTanium orthodontic archwiresStoyanova-Ivanova, Angelina; Ilievska, Ivana; Petrova, Violeta P.; Gueorgieva, M.; Petrov, Valeri G.; Andreeva, Laura A.; Zaleski, Andrzej Janusz; Mikli, ValdekBulgarian Chemical Communications2018 / p. 73 - 79 http://www.bcc.bas.bg/bcc_volumes/Volume_50_Special_F_2018/P73-79_Pages%20from%20BCC_50_SpIs_F_2018.pdf https://www.scopus.com/sourceid/19700175454 https://www.scopus.com/record/display.uri?eid=2-s2.0-85060028534&origin=resultslist&sort=plf-f&src=s&sid=d8709a23976409e92e5a00295154abf1&sot=b&sdt=b&s=TITLE%28%22Physicochemical+characterization+on+clinically+retrieved+TriTanium+orthodontic+archwires%22%29&sl=97&sessionSearchId=d8709a23976409e92e5a00295154abf1&relpos=0
• Physicochemical research of clinically retrieved CU-NI-TI orthodontic archwiresStoyanova-Ivanova, Angelina; Petrov, Valeri G.; Petrova, Violeta P.; Andreeva, Laura A.; Ilievska, Ivana; Zaleski, Andrzej Janusz; Mikli, ValdekActa Medica Bulgarica2021 / p. 68 - 74 https://doi.org/10.2478/amb-2021-0011 https://www.scopus.com/sourceid/26759 https://www.scopus.com/record/display.uri?eid=2-s2.0-85105706361&origin=resultslist&sort=plf-f&src=s&sid=d8709a23976409e92e5a00295154abf1&sot=b&sdt=b&s=DOI%2810.2478%2Famb-2021-0011%29&sl=97&sessionSearchId=d8709a23976409e92e5a00295154abf1&relpos=0
• Structural and morphological characterization of heat-activated nickel-titanium archwiresIlievska, Ivana; Petrov, Valery; Andreeva, Laura; Mikli, ValdekBulgarian chemical communications2017 / p. 33-39 : ill http://www.bcc.bas.bg/
• Study of the impact of the treatment period on the surface characteristics of nitinol heat-activated orthodontic wiresPetrov, Valery; Andreeva, Laura; Terzieva, Stanimira; Stoyanova-Ivanova, Angelina; Kovacheva, Daniela; Mikli, Valdek; Ilievska, IvanaInternational journal of science and research (IJSR)2015 / p. 3190-3193 : ill http://www.ijsr.net/archive/v4i4/SUB153329.pdf