//-->
Teoria procesów źywiołowych w zarysie
Dobrowolski, Kazimierz, (1973)
Poverty and mobility in India : a field-theoretic perspective
Mukherji, Shekhar, (1982)
Interprovincial migration and the non-linear interaction hypothesis
Hautamäki, Lauri, (1971)
An experimental approach for the migration decision process
Lieber, Stanley R., (1979)
Recreation expenditures and opportunity theory : the case of Illinois
Lieber, Stanley R., (1989)
Consumer behavior in different areas
Lentnek, Barry, (1975)