Paul Henkart, phenkart@phenkart@gmail.com Alistair Harding, Graham Kent, Dan Lizaralde, John Hopper, Tom O'Brien, Mark Wiederspahn, Mary Kappus, John Shay, Rudolf Widmer-Schnidrig, Warren Wood, David Hale, Mladen Nedimovic, Kurt Schwehr Some routines from books: Robinson: "Multichannel Time Series" Oppenheim and Schafer: "Digital Signal Processing" Press et al:"Numerical Recipes"