Sedaghatjoo, Mojtaba, and Salimeh Dehghani. 2017. “PRESERVING INJECTIVE PROPERTIES OF ACTS OVER MONOIDS UNDER LIMITS AND THEIR TRANSFER FROM COLIMITS TO THE COMPONENTS”. Italian Journal of Pure and Applied Mathematics 37 (July):1-7. https://journals.uniurb.it/index.php/ijpam/article/view/6840.