Source: http://bib.univ-oeb.dz:8080/jspui/bitstream/123456789/7540/1/La%20meilleure%20gestion%20du%20d%C3%A9lai%20selon%20les%20normes%20techniques%20et%20son%20influence%20sur%20la%20qualit%C3%A9%20des%20%C3%A9quipements%20islamiques.pdf