Harezlak, J., Ruppert, D. and Wand, M.P. (2018)
Semiparametric Regression with R.
New York: Springer.
[Book web-site]


Ruppert, D., Wand, M.P. and Carroll, R.J. (2003)
Semiparametric Regression.
New York: Cambridge University Press.
[Book web-site]


Wand, M.P. and Jones, M.C. (1995)
Kernel Smoothing.
London: Chapman and Hall.
[Book web-site]