@inbook{Galkowski_2015,
title={Orthogonal Series Estimation of Regression Functions in Nonstationary Conditions},
ISBN={9783319193243},
ISSN={1611-3349},
url={http://dx.doi.org/10.1007/978-3-319-19324-3_39},
DOI={10.1007/978-3-319-19324-3_39},
booktitle={Artificial Intelligence and Soft Computing},
publisher={Springer International Publishing},
author={Galkowski,
Tomasz and Pawlak,
Miroslaw},
year={2015},
pages={427–435} }