@incollection{SchSmoMue97,
    Author = {Sch{\"o}lkopf, Bernhard and Smola, Alexander and M{\"u}ller, Klaus-Robert},
    Booktitle = "Artificial Neural Networks---ICANN'97",
    Pages = "583--588",
    Publisher = "Springer",
    Title = "Kernel principal component analysis",
    Year = "1997"
}