Frank-Michael Schleif Matthias Ongyerth Thomas Villmann Sparse Coding Neural Gas for Analysis of Nuclear Magnetic Resonance Spectroscopy. 620-625 2008 CBMS http://doi.ieeecomputersociety.org/10.1109/CBMS.2008.39 conf/cbms/2008 db/conf/cbms/cbms2008.html#SchleifOV08