@. Aksoy, C. O. Onargan, and T. , The role of umbrella arch and face bolt as deformation preventing support system in preventing building damages, in Tunnelling and underground space technology, pp.553-559, 2010.

@. Caudron, S. Dias, D. Chantron, L. Kastner, and R. , Numerical modelling of a reinforcement process by umbrella arch, International Conference on Numerical Simulation of Construction Processes in Geotechnical Engineering for Urban Environment, pp.23-24, 2006.

@. Janin and J. , Tunnels en milieu urbain : Prévisions des tassements avec prise en compte des présoutènements (renforcement du front de taille et voûte-parapluie). PhD, 2012.

@. Prountzopoulos, Tunnel face reinforcement and protection -Optimization using 3D nite element analyses, Proceedings of the 21st European Young Geotechnical Engineers Conference, pp.33-39, 2011.