@article{paperid:1062090, author = {A. Pakdaman and Torabi Ardakani, Hamid and Mashayekhy Fard, Behrooz}, title = {On the existence of categorical universal coverings}, journal = {Italian Journal of Pure and Applied Mathematics}, year = {2017}, volume = {37}, number = {1}, month = {March}, issn = {1126-8042}, pages = {289--300}, numpages = {11}, keywords = {Coverings; Universal Coverings; Categorical Universal Coverings}, }