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• Influence of polypropylene materials to polypropylene hinge strength and durabilityKrumme, Andres; Sivonen, M.; Kiilerich, M.Tallinna Tehnikaülikooli Toimetised1994 / lk. 107-114: ill
• Mechanical and physical properties of thermally modified wood flour reinforced polypropylene compositesKallakas, Heikko; Martin, Mihkel; Goljandin, Dmitri; Poltimäe, Triinu; Krumme, Andres; Kers, JaanAgronomy research2016 / p. 994-1003 : ill http://ise.elnet.ee/record=b2891902~S1*est https://www.scopus.com/sourceid/21100201050 https://www.scopus.com/record/display.uri?eid=2-s2.0-84969988886&origin=inward&txGid=68ddfb679baa71078c659322e97554a0
• Mechanical and physical properties of thermally modified wood flour reinforced polypropylene composites [Online resource]Kallakas, Heikko; Poltimäe, Triinu; Krumme, Andres; Kers, JaanTartu Ülikooli ASTRA projekt PER ASPERA : Funktsionaalsed materjalid ja tehnoloogiad : [7-8 märts 2017, Tartu : teesid]2017 / [1] p http://fmtdk.ut.ee/teesid/
• Morphology of moulded polypropyleneKrumme, Andres; Viikna, Anti24th Estonian Chemistry Days : abstracts of scientific conference1998 / p. 33
• Permeability of water and oleic acid in composite films of phase separated polypropylene and cellulose stearate blendsKrasnou, Illia; Gardebjer, Sofie; Tarasova, Elvira; Larsson, Anette; Westman, Gunnar; Krumme, AndresCarbohydrate polymers2016 / p. 450-458 : tab. https://doi.org/10.1016/j.carbpol.2016.07.016 https://www.scopus.com/sourceid/25801 https://www.scopus.com/record/display.uri?eid=2-s2.0-84978405421&origin=inward&txGid=559503ef6b02fa8a76e63e9cbf461501 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=CARBOHYD%20POLYM&year=2016 https://www.webofscience.com/wos/woscc/full-record/WOS:000380944500050
• Polüolefiinide termilisest lagunemisestIvanova, E.; Einborn, Illi; Piiroja, EduardXXXII üliõpilaste teaduslik-tehnilise konverentsi ettekannete teesid : pühendatud V. I. Lenini 110. sünniaastapäevale : 16.-18. aprill 19801981 / lk. 130 https://www.ester.ee/record=b1322611*est
• Polüpropüleenist hinged = Polypropylene hingesKrumme, Andres; Viikna, AntiXVII Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid = 17th Estonian Chemistry Days : abstracts of scientific conference1996 / lk. 85-86 https://www.ester.ee/record=b1070511*est
• Properties of glass filled polypropylene for fused filament fabricationSpörk, Martin; Savandaiah, Chethan; Arbeiter, Florian; Schuschnigg, Stephan; Holzer, ClemensSPE ANTEC 2017, Anaheim, California, USA, 8-10 May 20172017 / p. 105-111 : ill https://www.proceedings.com/content/052/052413webtoc.pdf https://www.scopus.com/sourceid/53842 https://www.scopus.com/record/display.uri?eid=2-s2.0-85038625302&origin=inward&txGid=2ff03d9da16fe13208518926fcbe9c98
• Strength and durability studies of polypropylene hingesKrumme, Andres; Viikna, AntiProceedings of the Estonian Academy of Sciences. Engineering1996 / 1, p. 72-88: ill
• Активирование полиэтилена и полипропилена в смеси H2SO4, H2O и K2Cr2O7Piiroja, Eduard; Ljovina, N. A.; Balog, S. N.Обработка поверхности полиолефинов и декорирование поверхности полиолефинов : материалы республиканской научно-технической конференции. Часть 11973 / с. 51-64 https://www.ester.ee/record=b1337091*est
• Деструкция отходов полиэтилена и полипропиленаAmmon, Reet; Ivanova, Elvira; Kirsikivi, A.; Piiroja, EduardXXV студенческая научно-техническая конференция вузов Прибалтийских республик, Белорусской ССР и Молдавской ССР, 21-23 апреля 1981 года : тезисы докладов. Том 2, Автоматика. Энергетика. Механика. Химия1981 / с. 191-192 https://www.ester.ee/record=b1322629*est