Peter Danchev
Hacettepe Journal of Mathematics and Statistics
2015-Cilt: 44 - Sayı: 6
1351-1359
almost Σ-cyclic groups, almost pω+n-projective groups, almost ω1- pω+n-projective groups, strongly almost ω1-pω+n-projective groups, nicely almost ω1-pω+n-projective groups
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