4Mustapha, B. and Obid, S.N.B.S., Tax service quality. The mediating effect of perceived ease of use of the online tax system. Procedia-Social And Behav- ioral Sciences, Vol. 172,2015.
5Ziegler, C., Liberman, A. and Nimri, R., Re- duced worries of hypoglycaemia, high satisfaction, and increased perceived ease of use after experiencing four nights of MD-logic artificial pancreas at home. Journal Of Diabetes Research, Vol.34, No.5,2015.
6Grieger M. Elect ronic Marketpl aces:A Literature Review and a Call f or Supply Chain Management Research[J]. European Journal of Operational Research, 2013,144:280 - 294.
7Trippl M. Knowledge sourcing beyond buzz and pipelines: Evi- dence from the Vienna software sector IJ]. Economic Geogra- phy, 2009,85(4): 443 - 462.