TAKASHI OKADA ET AL: 'Scalable Purification of Adeno-associated Virus Serotype 1 (AAV1) and AAV8 Vectors, Using Dual Ion-Exchange Adsorptive Membranes', HUMAN GENE THERAPY, vol. 20, no. 9, 1 September 2009 (2009-09-01), pages 1013 - 1021, XP055073581, ISSN: 1043-0342, DOI: 10.1089/hum.2009.006