• The Hermite - Minkowski domain of reduction of positive definite quadratic forms in six variablesTammela, PaulJournal of Soviet Mathematics1976 / p. 677-688 : ill https://doi.org/10.1007/BF01092512
• Reduction theory of positive quadratic formsTammela, PaulJournal of Soviet Mathematics1979 / p. 197-276 : ill https://doi.org/10.1007/BF01117520 https://www.scopus.com/sourceid/6100152903 https://www.scopus.com/record/display.uri?eid=2-s2.0-34250267079&origin=resultslist&sort=plf-f&src=s&st1=%22Reduction+theory+of+positive+quadratic+forms%22&sid=3f58576c4e08a4298552e9070fee6831&sot=b&sdt=b&sl=61&s=TITLE-ABS-KEY%28%22Reduction+theory+of+positive+quadratic+forms%22%29&relpos=1&citeCnt=2&searchTerm=
• Two remarks on Bravais manifoldsTammela, PaulJournal of Soviet Mathematics1976 / p. 689-691 : ill https://doi.org/10.1007/BF01092513 https://www.scopus.com/sourceid/6100152903 https://www.scopus.com/record/display.uri?eid=2-s2.0-34250393075&origin=resultslist&sort=plf-f&src=s&st1=%22two+remarks+on+bravais+manifolds%22&sid=b0fc804e131475d7f00816bab0e7dea1&sot=b&sdt=b&sl=49&s=TITLE-ABS-KEY%28%22two+remarks+on+bravais+manifolds%22%29&relpos=0&citeCnt=0&searchTerm=
• 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=