群(英语:Rudvalis group) R u {\displaystyle Ru} ; 铃木散在群(英语:Suzuki sporadicgroup) S u z {\displaystyle Suz} 或 F 3 − {\displaystyle F_{3-}} ; O'Nan 群(英语:O'Nan group) O
finite simple group, J. Algebra 20 (1972) 540-569 and 34 (1975) 188-189. Volker Gebhardt, Two short presentations for Lyons' sporadic simple group, Experimental
PMID 12934968 (英语). Braak H, Del Tredici K. Where, when, and in what form does sporadic Alzheimer's disease begin?. Current Opinion in Neurology. 2012-12, 25 (Pt
Times-News. 1991-06-09. Sanger, David E. Volcano Erupts After Months of Sporadic Activity. Star-News 124 (200). 1991-06-04: 1 [2015-12-16]. (原始内容存档于2020-07-23)