14.
Ferreira M. M. C., Brandes M. L., Ferreira I. M. C., Booksh K. S., Dolowy, W. C., Gouterman, M., Kowalski, B. R., “Chemometric Study of the Fluorescence of Dental Calculus by Trilinear Decomposition”. Appl. Spectrosc., 49(9), 1317-1325 (Sep 1995).
[Article. Cited in the Three-Way Bibliography Database, see Notes.]

Abstract.
Chemometric techniques have been applied to the unresolved second-order porphyrinic emission-excitation fluorescent spectra of several
animal dental calculus deposits dissolved in HCl, A singular value decemposition (SVD) procedure was used for preliminary indication of the
number of fluorescent species present in the samples, The trilinear decomposition (TLD) method was applied to resolve component spectra,
resulting in three porphyrinic spectral profiles for both canines and felines.

Keywords.
Trilinear Decomposition; Curve Resolution; Total Luminiscence Spectra; Animal Dental Calculus; Porphyrins.

Keywords Plus.
Rank Annihilation; Resolution; Spectra.