Subrahmanya Sastry .T, D. V. R., and B. Madhusudhana Rao. “A Study on Consumers’ Perception About the Importance of Payment Processing Efficiency in Online Retailing Environment”. Indian Journal of Marketing, vol. 47, no. 6, June 2017, pp. 22-34, doi:10.17010/ijom/2017/v47/i6/115367.