In this paper, primitive submodules are defined and various properties of them are investigated. Some characterizations of co-semisimple modules are given and several conditions under which co-semisimple and regular modules coincide are discussed.
"Primitive Submodules, Co-semisimple and Regular Modules." Taiwanese J. Math. 22 (3) 545 - 565, June, 2018. https://doi.org/10.11650/tjm/171102