Grigoryev, S.B. and Leonov, A.B. 2018. Einstein Equations in the Case of Static Cylindrical Symmetry and the Diagonal Stress-Energy Tensor with Mutually Proportional Components. Ukrainian Journal of Physics. 58, 9 (Oct. 2018), 894. DOI:https://doi.org/10.15407/ujpe58.09.0894.