Forecasting number of ISO 14001 certifications of selected countries: application of even GM (1, 1), DGM, and NDGM modelsJan 1, 2019·Muhammad Ikram,Amin Mahmoudi,Syed Zulfiqar Ali Shah,Muhammad Mohsin· 0 min read DOI Source DocumentpublicationLast updated on Jan 1, 2019 ← Evaluation of key factors influencing process quality during construction projects in Pakistan Jan 1, 2019Integrated effect of energy consumption, economic development, and population growth on CO2 based environmental degradation: a case of transport sector Jan 1, 2019 →