Adamczyk, Jerzy. “Collective Absolution of Many Penitents Without Prior Individual Confession in Case of Grave Necessity (can. 961 § 1 No. 2 and § 2 of the Code of Canon Law)”. Canon Law. Legal and Historical Quarterly, vol. 64, no. 2, June 2021, pp. 55-84, doi:10.21697/pk.2021.64.2.03.