TY - JOUR AU - Tahar Z. Boulmezaoud TI - A discrete epidemic model and a zigzag strategy for curbing the Covid-19 outbreak and for lifting the lockdown JO - Mathematical modelling of natural phenomena PY - 2020 VL - 15 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/mmnp/2020043/ DO - 10.1051/mmnp/2020043 LA - en ID - MMNP_2020_15_a19 ER -