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