Enumeration Finite ring

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^ singmaster, david; bloom, d. m. (october 1964), e1648 , american mathematical monthly, 71 (8): 918–920, doi:10.2307/2312421, jstor 2312421 
^ dresden, gregory (2005), rings 4 elements 
^ ballieu, robert (1947), anneaux finis; systèmes hypercomplexes de rang trois sur un corps commutatif , ann. soc. sci. bruxelles, sér. i, 61: 222–7, mr 0022841, zbl 0031.10802 
^ scorza (1935), see review of ballieu irving kaplansky in mathematical reviews






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