TAWFIQ, L.N.M..
 Fuzzy Internal Direct Product.
<strong>Ibn AL- Haitham Journal For Pure and Applied Science</strong>, [S.l.], v. 18, n. 1, p. 80-86, june 2019.
ISSN 2521-3407.
Available at: &lt;<a href="http://jih.uobaghdad.edu.iq/index.php/j/article/view/2199" target="_new">http://jih.uobaghdad.edu.iq/index.php/j/article/view/2199</a>&gt;. Date accessed: 02 dec. 2019.