• Doping mechanism for polyparaphenyleneGolovtsov, Igor; Öpik, AndresKemia 95 : Finnish Chemical Congress and Exhibition and Nordic Polymer Meeting 1995, Helsinki, 14-16 Nov., 1995 : abstracts1995 / p. 53-54
• Halogeenide kõrgtemperatuurne difusioon polüparafenüleenis = High temperature diffusion of halogens in polyparaphenyleneGolovtsov, Igor; Öpik, AndresXVII Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid = 17th Estonian Chemistry Days : abstracts of scientific conference1996 / lk. 31-32 https://www.ester.ee/record=b1070511*est
• High temperature diffusion of halogens and alkali metals into polyparaphenyleneGolovtsov, Igor; Öpik, AndresSynthetic metals1999 / p. 463-464: ill
• High temperature diffusion of halogens and alkali metals into polyparaphenyleneGolovtsov, Igor; Öpik, AndresInternational Conference on Science and Technology of Synthetic Metals : ICSM'98 : July 12-18, 1998, Montpellier, France : book of abstracts1998 / p. 204 https://www.sciencedirect.com/science/article/abs/pii/S0379677998012004
• High temperature doped polyparaphenylene as electrode solutionsGolovtsov, Igor; Öpik, AndresEUROMAT 99 : European Congress on Advanced Materials and Processes : Munich, Germany, 27-30 September 19991999 / reference 438 F.4-P18
• Multilayer structures based on polyparaphenylene thin filmsGolovtsov, Igor; Bereznev, Sergei; Öpik, AndresBaltic Polymer Symposium 2009 : Ventspils, Latvia, September 22-25, 2009 : programme and proceedings2009 / p. 14
• Polüparafenüleen/polüpürrool mitmekihilised struktuuridGolovtsov, Igor; Öpik, AndresXXV Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid = 25th Estonian Chemistry Days : abstracts of scientific conference1999 / lk. 31
• The conductivity mechanism of polyparapenylene, doped with halogens and alkali metalsÖpik, Andres; Golovtsov, Igor; Lobanov, A.; Kerm, KarinProceedings of the International Conference on Synthetic Metals, Göteborg, 19921992 / p. 311
• The conductivity mechanism of polyparaphenylene, doped with halogens and alkali metalsÖpik, Andres; Golovtsov, Igor; Lobanov, A.; Kerm, KarinSynthetic metals1993 / 55-57, p. 4924-4939 https://www.sciencedirect.com/science/article/abs/pii/037967799390840S
• Thermodynamic modeling for investigation of the polyparaphenyleneGolovtsov, Igor; Öpik, AndresProceedings of Baltic Polymer Symposium 2001 : Oct. 11-12 in Tallinn2001 / p. 67-73 : ill
• Thin composite films consisting of polypyrrole and polyparaphenyleneGolovtsov, Igor; Bereznev, Sergei; Traksmaa, Rainer; Öpik, AndresThin solid films2006 / 19, p. 7712-7715 : ill
• Исследование свойств полипарафениленаRaukas, Maie; Öpik, Andres; Ahven, TarmoФизическая химия соединений А//II//В//VI//1987 / с. 13-22
• Получение n-типа проводящего полипарафениленаÖpik, Andres; Ahven, TarmoЭлектронные материалы1989 / с. 41-50
• Электропроводность полипарафенилена, легированного йодомÖpik, Andres; Ahven, TarmoФизическая химия соединений А//II//В//VI//1987 / с. 23-31
• Электрофизические свойства полипарафенилена легированной йодомAhven, Tarmo; Raukas, Maie; Öpik, AndresМеханика / XXXI студенческая научно-техническая конференция, 21-23 апр. 1987 г.1987 / с. 95