ICT usage and its impact on profitability of SMEs in 13 African Countries. - Steve Esselaar; Christoph Stork; Ali Ndiwalana; Mariama Deen-Swarray (ICTD, 2006)

Mobile telephony access and usage in Africa. - Augustin Chabossou; Christoph Stork; Matthias Stork; Pam Zahonogo (ICTD, 2009)