Schölkopf, B Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society; Max Planck Institute for Biological Cybernetics, Max Planck Society;
https://www.mitpressjournals.org/doi/10.1162/089976698300017467 (Publisher version)
Schölkopf, B., Smola, A., & Müller, K.-R. (1998). Nonlinear Component Analysis as a Kernel Eigenvalue Problem. Neural computation, 10(5), 1299-1319. doi:10.1162/089976698300017467.