1. J. Fruin: Pedestrian Planning and Design, Metropolitan Association of Urban Designers and Environmental Planners, Inc., New York (1971).
2. B. Pushkarev and J. Zupan: Urban Space for Pedestrians, Regional Plan Association, MIT Press (1975).
3. J. Pauls: Building Evacuation: Research Findings and Recommendations, In: D. Canter (Ed.) Fires and Human Behaviour, John Wiley and Sons, pp. 251–275 (1980).
4. J. Pauls: Development of Knowledge about Means of Egress, Fire Technology, 20,2, pp. 28–40 (1984).
5. Design and Construction of Building Exits, National Bureau of Standards, US Department of Commerce, Gaithersburg, Maryland (1935).