Vaitkus P, Čekanavičius V. Apie didelius nuokrypius neigiamam binominiam dėsniui. LMR [Internet]. 1998 Dec. 14 [cited 2025 May 2];38(II):523–527 . Available from: https://www.zurnalai.vu.lt/LMR/article/view/37972