1. Accenture (2015). Adding Value to Parcel Deliverywww.accenture.com Accessed on 9 Jan 2017.
2. ATKearney (2013). Online Retail Is Front and Center in the Quest for Growth. www.atkearney.com Accessed on 9 Jan 2017.
3. An evaluation of recent pickup point experiments in European cities: the rise of two competing models;Augereau;Innovations in City Logistics,2008
4. A strategic alliance model with a regional monopoly of service centres in express courier services;Chung;International Journal of Services and Operations Management,2009
5. Basics of Qualitative Research;Corbin,2008