1. Borsenberger C (2015) The concentration phenomenon in e-commerce. In: Crew MA, Brennan TJ (eds) Postal and delivery innovation in the digital economy. Edward Elgar, Cheltenham, pp 31–42
2. Borsenberger C, Cremer H, De Donder P, Joram D, Lécou S (2014) Pricing of delivery services in the e-commerce sector. In: Crew MA, Brennan TJ (eds) The role of the postal and delivery sector in a digital age. Edward Elgar, Cheltenham, pp 75–92
3. Borsenberger C, Cremer H, De Donder P, Joram D (2015) Quality and pricing of delivery services in the E-commerce sector. In: Crew MA, Brennan TJ (eds) Postal and delivery innovation in the digital economy. Springer International, Cham
4. Fevad (2014) Bilan du e-commerce en France en 2013, January
5. Oxatis (2014) Le profil du e-commerçant en 2014, January