Geodesic
On the coproducts of cyclics in commutative modular and semisimple group rings
Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 2 (2006), pp. 45-52.

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We study certain properties of the coproducts (= direct sums) of cyclic groups in commutative modular and semisimple group rings. Our results strengthen a statement due to T. Zh. Mollov (Pliska, Stud. Math. Bulgar., 1981) and also they may be interpreted as a natural continuation of a recent investigation of ours (Serdica Math. J., 2003). 
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Peter Danchev. On the coproducts of cyclics in commutative modular and semisimple group rings. Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 2 (2006), pp. 45-52. https://geodesic-test.mathdoc.fr/item/BASM_2006_2_a4/

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