Citation: C. Lanvers et al., SIMULTANEOUS DETERMINATION OF ALL-TRANS-RETINOIC, 13-CIS-RETINOIC AND9-CIS-RETINOIC ACID, THEIR 4-OXO METABOLITES AND ALL-TRANS-RETINOL INHUMAN PLASMA BY HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY, Journal of chromatography B. Biomedical applications, 685(2), 1996, pp. 233-240