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2. Beluszky, P., 1999. The Hungarian urban network at the end of the second millennium. Discussion Paper No. 27. Pécs, Center for Regional Studies of the Hungarian Academy of Sciences, Hungary
3. Településhálózat (Settlement Network), 1985;Beluszky,1989
4. Városhálózatt (Urban Network), 1985;Beluszky,1989
5. Transportation Geography;Black,1989