TY - GENERIC DO - 10.20944/preprints202007.0037.v1 UR - http://dx.doi.org/10.20944/preprints202007.0037.v1 TI - Ultrametric Model for COVID-19 Dynamics: An Attempt to Explain Slow Approaching Herd Immunity in Sweden T2 - Preprints AU - Khrennikov, Andrei PY - 2020 DA - 2020/07/03 PB - Preprints