Szmygin, Bogusław, and Maciej Trochonowicz. “The District ‘Dyrekcja’ in Chełm – the Evaluation of District After 80 Years of Its Foundation”. Budownictwo I Architektura, vol. 6, no. 1, June 2010, pp. 119-35, doi:10.35784/bud-arch.2295.