Arpino P., Moreau J.-P., Oruezabal C. & Flieder F., avril 1977 — Gas chromatographic-mass spectrometric analysis of tannin hydrolysates from the ink of ancient manuscripts (XIth to XVIth century). Journal of Chromatography A vol. 134, n° 2, p. 433-439
https://dx.doi.org/10.1016/S0021-9673(00)88542-8