@proceedings {14601, title = {Flexible retaining structures supported by anchor beams: the problem of tie-rod length}, journal = {Proceedings of the 16th European Conference on Soil Mechanics and Geotechnical Engineering}, year = {2015}, pages = {949-954}, publisher = {3}, address = {Edimburgo, Esc{\'o}cia}, author = {R. Leal and A. Nunes Ant{\~a}o and Guerra, N. M. C.} }