Bergmeister, K., Breen, J. E. and Jirsa, J. O. (1991). Dimensioning of the nodes and
                           development of reinforcement, Structural Concrete, IABSE Colloquium, Stuttgart, Report,
                           International Association for Bridge and Structural Engineering, Zurich, pp. 551-556.Bergmeister,
                           K., Breen, J. E. and Jirsa, J. O. (1991). Dimensioning of the nodes and development
                           of reinforcement, Structural Concrete, IABSE Colloquium, Stuttgart, Report, International
                           Association for Bridge and Structural Engineering, Zurich, pp. 551-556.
