Web-Based Service for Collaborative Authoring Learning Using Grid Portal. - Dayang Hjh. Tiawa Awang Hj. Hamid; Norma Alias; Abdul Hafidz Hj. Omar; Md. Rajibul Islam; Hafizah Farhah Saipan Saipol; Siti Qatrunada Muhd Palil; Asnida Che Abdul Ghani; Nurelya Ramli (Int. J. Knowl. Soc. Res., 2013)