M. Ayub Khan Yousuf Zai, M. Rashid Kamal Ansari, Afaq Ahmed Siddiqui, & Faisal Ahmed Khan Afridi. (2021). Efficacy of Non-Linear Approach in the Study of Ozone Layer Depletion. Journal of Basic & Applied Sciences, 9, 587–591. https://doi.org/10.6000/1927-5129.2013.09.75