Barriers in spatial interactions and communications Peter NijkampPiet RietveldIlan Salomon Original Articles Pages: 237 - 252
Context specific media choice and barriers to communication in universities Manfred M. FischerRico MaggiChristian Rammer Original Articles Pages: 253 - 269
Barriers to international trade Johannes BröckerHerold C. Rohweder Original Articles Pages: 289 - 305
Telephone calls and communication barriers Piet RietveldLeon Janssen Original Articles Pages: 307 - 318