@article{RSMUP_2018__140__185_0,
     author = {Sawkmie, Amplify and Singh, Madan Mohan},
     title = {On the uniqueness of the factorization of power digraphs modulo $n$},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {185--219},
     publisher = {European Mathematical Society Publishing House},
     address = {Zuerich, Switzerland},
     volume = {140},
     year = {2018},
     doi = {10.4171/RSMUP/8},
     mrnumber = {3880217},
     zbl = {1410.05082},
     url = {http://www.numdam.org/articles/10.4171/RSMUP/8/}
}