Geodesic
Formal matrices and rings close to regular
Fundamentalʹnaâ i prikladnaâ matematika, Tome 21 (2016) no. 1, pp. 5-21.

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This paper contains new and known results on formal matrix rings close to regular. The main results are given with proofs. 
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A. N. Abyzov; A. A. Tuganbaev. Formal matrices and rings close to regular. Fundamentalʹnaâ i prikladnaâ matematika, Tome 21 (2016) no. 1, pp. 5-21. http://geodesic.mathdoc.fr/item/FPM_2016_21_1_a0/

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