Shchedryk, V. P. 2021. “The Left Greatest Common Divisor and the Left Least Common Multiple of All Solutions of the Matrix Equation BX = A over a Commutative Elementary Divisor Domain”. Ukrains’kyi Matematychnyi Zhurnal 73 (2), 261 -67. https://doi.org/10.37863/umzh.v73i2.6321.