The unknown urban realm - Neveling, U., R. Sulzer, W. Ubbens and G. Wersig (1973): Methodology and results of a content analysis of the papers presented at the Congress ''Citizen and City in the Year 2000''. Plan Europe 2000, Project 3, Vol. 2. 190 pp., 6 figs., 36 tables. The Hague: Martinus Nijhoff. Hfl. 30,- - Carter, H. (Elsevier)
http://linkinghub.elsevier.com/retrieve/pii/0016-7185(74)90123-7
Keywords: R