been observed in M108. In January 1969, a type II supernova designated as SN 1969B was discovered in Messier 108. It reached a brightness of 13.9 mag. SPIRITS...

He is one of the 26 sporadic groups and was found by Dieter Held (1969a, 1969b) during an investigation of simple groups containing an involution whose...

for 60 years". University of Amsterdam. 25 January 2024. Het Vrije Volk 1969b, p. 3. Het Vrije Volk 1969a, p. 5. Henk Branderhorst et al., Afscheid van...

109 (5): 349–392, doi:10.1007/bf01110558, S2CID 119934963 Koecher, Max (1969b), An elementary approach to bounded symmetric domains, Lecture Notes, Rice...