“Challenges and Opportunities Created in Business Due to Pandemic Coronavirus and Strategic & Tactics to Manage Critical Conditions”. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695 IJERAT, vol. 8, no. 6, June 2022, pp. 1-9, https://doi.org/10.31695/IJERAT.2022.8.6.1.