Vol. 4 No. 2 (2018): October

(1) University of Porto & INESC TEC ,

(2) Polythecnic Institute of Porto and INESC TEC

(1) School of Business and Management - Institut Teknologi Bandung ,

(2) School of Business and Management – Institut Teknologi Bandung ,

(3) School of Business and Management – Institut Teknologi Bandung

(1) Universitas Airlangga ,

(2) Universitas Airlangga ,

(3) Universitas Airlangga

(1) University of Sydney ,

(2) Swinburne Institute of Technology

(1) Universitas Atma Jaya Yogyakarta ,

(2) Universitas Atma Jaya Yogyakarta ,

(3) Universitas Atma Jaya Yogyakarta

(1) (SCOPUS ID = 56426242200), Universitas Airlangga ,

(1) Institut Bisnis dan Informatika Stikom Surabaya ,

(2) Institut Bisnis dan Informatika Stikom Surabaya

(1) Universitas Sriwijaya ,

(2) Universitas Sriwijaya

(1) Faculty of Computing and Information Technology Rabigh, King Abdulaziz University, Jeddah, Makkah, Saudi Arabia ,

(2) Faculty of Computing and Information Technology Rabigh, King Abdulaziz University, Jeddah, Makkah, Saudi Arabia

(1) Faculty of Computing and Information Technology Rabigh, King Abdulaziz University, Jeddah, Makkah, Saudi Arabia ,

(2) Faculty of Computing and Information Technology Rabigh, King Abdulaziz University, Jeddah, Makkah, Saudi Arabia

(1) Universitas Gadjah Mada ,

(2) Universitas Gadjah Mada ,