TY - GENERIC DO - 10.20944/preprints202103.0391.v1 UR - http://dx.doi.org/10.20944/preprints202103.0391.v1 TI - Origins of Stellar Mass Neutron Black Holes, Supermassive Dark Matter Black Holes and Universe Evolution T2 - Preprints AU - Hwang, Jae-Kwang PY - 2021 DA - 2021/03/15 PB - Preprints