Beachy JA, Behboodi M, , Yazdi F.  Prime $M$-ideals, $M$-prime submodules, $M$-prime radical and $M$-Baer's lower nilradical of modules.  J. Korean Math. Soc. 2013;50:1271-1290.  https://doi.org/10.4134/JKMS.2013.50.6.1271