TY - JOUR AU - Kamal Shah AU - Muhammad Arfan AU - Wejdan Deebani AU - Meshal Shutaywi AU - Dumitru Baleanu TI - Investigation of COVID-19 mathematical model under fractional order derivative JO - Mathematical modelling of natural phenomena PY - 2021 VL - 16 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/mmnp/2021044/ DO - 10.1051/mmnp/2021044 LA - en ID - MMNP_2021_16_a21 ER -