• Direct evidence of the cyclooxygenase pathway of prostaglandin synthesis in arthropods : genetic and biochemical charaterization of two crustacean cyclooxygenasesVarvas, Külliki; Kurg, Reet; Hansen, Kristella; Järving, Reet; Järving, Ivar; Valmsen, Karin; Lõhelaid, Helike; Samel, NigulasInsect biochemistry and molecular biology2009 / 12, p. 851-860 https://www.sciencedirect.com/science/article/pii/S0965174809001490
• Novel membrane-associated prostaglandin E synthase-2 from crustacean arthropodsHansen, Kristella; Varvas, Külliki; Järving, Ivar; Samel, NigulasComparative biochemistry and physiology. Part B, Biochemistry and molecular biology2014 / p. 45-52 : ill https://doi.org/10.1016/j.cbpb.2014.05.004 https://www.scopus.com/sourceid/17373 https://www.scopus.com/record/display.uri?eid=2-s2.0-84903517812&origin=inward&txGid=94efc35933fe20442431b8b914f7fa32 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=COMP%20BIOCHEM%20PHYS%20B&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000340311900007
• Prostaglandiinide biosüntees punavetikatesVarvas, Külliki; Hansen, Kristella; Kasvandik, SergoXXXII Eesti Keemiapäevad : teaduskonverentsi teesid2011 / lk. 106
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• Structural and catalytic insights into the algal prostaglandin H synthase reveal atypical features of the first non-animal cyclooxygenaseVarvas, Külliki; Kasvandik, Sergo; Hansen, Kristella; Järving, Ivar; Morell, Indrek; Samel, NigulasBiochimica et biophysica acta : molecular and cell biology of lipids2013 / p. 863-871 : ill https://doi.org/10.1016/j.bbalip.2012.11.010 https://www.scopus.com/sourceid/16831 https://www.scopus.com/record/display.uri?eid=2-s2.0-84873726287&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1016%2Fj.bbalip.2012.11.010%29&sessionSearchId=225678e0ce9a8f1e46110ae409abc09f&relpos=0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=BBA-MOL%20CELL%20BIOL%20L&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000316438200020