Kropsz, I. “INFLUENCE OF LEVEL OF INFRASTRUCTURE ON REVENUES OF COMMUNITIES AND ON DEVELOPMENT OF ENTREPRISES ON RURAL AREAS OF THE LOWER SILESIA”. Acta Scientiarum Polonorum. Oeconomia, vol. 2, no. 1, June 2003, pp. 79-86, https://aspe.sggw.edu.pl/article/view/998.