Stashko, O. S., and V. I. Zhdanov. “Black Hole Mimickers in Astrophysical Configurations With Scalar Fields”. Ukrainian Journal of Physics 64, no. 11 (November 25, 2019): 1078. Accessed October 22, 2021. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019516.