1. ATM, Generalitat de Catalunya, IERMB, 2006. Catalan Daily Mobility Survey 2006 [Enquesta Mobilitat Quotidiana de Catalunya 2006]. ATM, Generalitat de Catalunya.
2. ATM, Ajuntament de Barcelona, IERMB, 2004. Working day mobility Survey 2004 [Enquesta de mobilitat en Dia Feiner 2004]. ATM, Ajuntament de Barcelona.
3. ATM, Ajuntament de Barcelona, IERMB, 2007. Working day mobility Survey, 2007 [Enquesta de mobilitat en Dia Feiner 2007]. ATM, Ajuntament de Barcelona.
4. Sustainable transportation planning on college campuses;Balsas;Transport Policy,2003
5. Unlimited Access;Brown;Transportation,2001