Fiserv takes on the e-billing market : how can we get them to turn off paper? - Grayson, Kent, (SAGE Publications Ltd, 2017)
Originally published: Grayson, K., Leiserson, E., & Waikar, S. (2009). Fiserv Takes on the E-Billing Market. 5-309-506. Evanston, IL: Kellogg School of Management, Northwestern University.