3PAULSON B C,,MSCE M.Underground Transit Station Constructionin Japan. Journal of the Construction Division,American Society of Civil Engi-neering . 1982
4ONO J,,MURATA K.Construction of a Very Deep Subway Station Using Cut-and Cover Method under HighGroundwater Pressure. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Ab-stracts . 1995