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2. Abe, E.: Hopf Algebras, Cambridge Univ. Press, 1980.
3. Abe, E.: Whitehead groups of Chevalley groups over polynomial rings, Comm. Algebra 11(12) (1983), 1271?1308.
4. Abe, E.: Whitehead groups of Chevalley groups over Laurent polynomial rings, Preprint Univ. Tsukuba, 1988.
5. Abe, E.: Chevalley groups over commutative rings, Proc. Conf. Radical Theory (Sendai, 1988), Uchida Rokakuho Publ. Comp., Tokyo, 1989, pp. 1?23.