1. Ambraseys, N. , 1975. The correlation of intensity with ground motion, in Proc. 14th Conf. Europ. Seism. Comm., Trieste, Bull. Europ. Comm. Earthq. Eng., Vol. 1, pp. 335-341.
2. Relationships between felt intensity and instrumental ground motion in the Central United States and California;Atkinson;Bull. seism. Soc. Am.,2007
3. A stable and efficient algorithm for nonlinear orthogonal distance regression;Boggs;SIAM J. Scient. Stat. Comput.,1987
4. A computational examination of orthogonal distance regression;Boggs;J. Econometr.,1988