حسن عبدالسلام علي عمران و مسعود سالم علي نصر أبونجيم 2019. The role of strategic vigilance in achieving strategic success Field study at Libyana mobile phone company Sabha. Journal of Pure & Applied Sciences . 18, 2 (Nov. 2019). DOI:https://doi.org/10.51984/jopas.v18i2.411.