Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S
and S-PLUS, Springer, New York. (Appendix A.8) Davidian, M. and Giltinan, D. M. (1995), Nonlinear Models for
Repeated Measurement Data, Chapman and Hall, London.
Joyner and Boor (1981), Peak horizontal acceleration and velocity from
strong-motion records including records from the 1979 Imperial
Valley, California, earthquake, Bulletin of the Seismological
Society of America, 71, 2011-2038.
Brillinger, D. (1987), Comment on a paper by C. R. Rao,
Statistical Science, 2, 448-450.