3F. Lizzi (1980) . buildings and The in use the of Root Piles in the underpinning of monument and old consolidation of Historic centers[J]. The Italin Technical Magazine L'INDUSTRIA CONSTRUZION Nr, 1 10, Dec, 1980, Rome.
9Benslimane A, Juran I, Bruce D A. Group and Network Effect in Micropile Design Practice[C]//Proceedings of the 14th International Confesence on Soil Mechanics and Foundation Engineering. International Confesence on Mechanics and Foundation Engineering. 1997:767-770.