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(en) Facino R. Maffei, Carini M., Brambilla A., Bombardelli E. & Morazzoni P., 1996. Proanthocyanidin-A2: a new polyphenol. Cosmetics & Toiletries.
(en) Kimura H., Ogawa S., Akihiro T. & Yokota K., 2011. Structural analysis of A-type or B-type highly polymeric proanthocyanidins by thiolytic degradation and the implication in their inhibitory effects on pancreatic lipase. J Chromatogr A. 1218 (42), pages 7704–7712, DOI10.1016/j.chroma.2011.07.024, PMID21803362.
(en) Koerner Jayma, Hsu Victor, Lee Jungmin & Kennedy James, 2009. Determination of Proanthocyanidin A2 Content in Phenolic Polymer Isolates by Reversed-Phase High Performance Liquid Chromatography. Journal of Chromatography A. 1216 (9), pages 1403–1409, DOI10.1016/j.chroma.2008.12.086, PMID19168185.
(en) Sarni-Manchado P., Le Roux E., Le Guerneve C., Lozano Y. & Cheynier V., 2000. Phenolic composition of litchi fruit pericarp. J Agric Food Chem, 48(12), pages 5995-6002.
(en) Hongxiang Lou, Yamazaku Y., Sasaku T., Uchida M., Tanaka H. & Oka S., 1999. A-type proanthocyanidins from peanut skins. Phytochemistry. 51 (2): 297–308, DOI10.1016/S0031-9422(98)00736-5.
(en) Dias, Suziane A., Cardoso (Gazio) Flávia P., Santin Silvana M.O., Da Costa Willian F., Vidotti Gentil J., De Souza Maria Conceição & Sarragiotto Maria Helena, 2009. Free radical scavenging activity and chemical constituents of Urvillea ulmaceae. Pharmaceutical Biology, 47 (8), pages 717–720, DOI10.1080/13880200902933336.
(en) Kazunari Kondo, Masaaki Kurihara, Kiyoshi Fukuhara, Takashi Tanaka, Takashi Suzuki, Naoki Miyata & Masatake Toyoda, 2000. Conversion of procyanidin B-type (catechin dimer) to A-type: evidence for abstraction of C-2 hydrogen in catechin during radical oxidation. Tetrahedron Letters, 22 January 2000, Volume 41, Issue 4, pages 485–488, DOI10.1016/S0040-4039(99)02097-3.