• Venkov's reduction theory of positive-quadratic formsTammela, PaulJournal of Soviet Mathematics1985 / p. 1306 - 1312 https://doi.org/10.1007/BF02108244 https://www.scopus.com/sourceid/6100152903 https://www.scopus.com/record/display.uri?eid=2-s2.0-34250110226&origin=resultslist&sort=plf-f&src=s&st1=tammela%2cp&sid=a0410d09eb8e6d141c8bc7386382acbc&sot=b&sdt=b&sl=21&s=FIRSTAUTH%28tammela%2c+p%29&relpos=11&citeCnt=1&searchTerm=