Urbanizaciiata i razvitieto na moloite selista v Balgariia (The urbanisation and development of small settlements in Bulgaria)
The urbanisation influences strongly the development of Bulgarian villages - on the first place by attracting rural population to urban centers. Main sources of migration flows are the grain-producing regions, the areas nearby the cities, remote
Demografsko razvitie i osobenosti na srednite gradove v Balgariia (Demogeographical development and peculiarities of the average-size towns in Bulgaria)