ESMAEEL, Rana B.; JASSAM, Ahmed. A.. On Nano ẛـpreـgـOpen Set. Ibn AL- Haitham Journal For Pure and Applied Science, [S.l.], v. 33, n. 3, p. 68-79, july 2020. ISSN 2521-3407. Available at: <http://jih.uobaghdad.edu.iq/index.php/j/article/view/2474>. Date accessed: 28 oct. 2020.