CRM - How it can help medium size companies and are there any downsides to its implementation Jan Heyn E-Book (pdf) 27.04.2012

Website Evaluation - Branding, Transactional facilities & social networking (www.desigual.com Jan Heyn E-Book (pdf) 22.04.2012

Brand Comparison Audi, Volkswagen, Volvo Jan Heyn, Patrick Blank, Maximilian Hohmann E-Book (epub) 23.04.2012