Zittei, M. V. M., and F. C. Fernandes. “E-Services In The E-Government: Bibliometric Analysis Of International Articles”. Future Studies Research Journal: Trends and Strategies, vol. 7, no. 2, Dec. 2015, p. 62, doi:10.24023/FutureJournal/2175-5825/2015.v7i2.206.