. "Sparse signals"@en . "Blind source separation"@en . "Rafael" . "Rafael Assato Ando" . . <253134870> . "Assato Ando" . . "Ion-selective electrodes"@en . "Chemical sensor arrays"@en . . "027b1a1bac28e6682e0a0992dbda0a40" . "Quadratic mixing model"@en . "Nonlinear mixtures"@en .