@article{KalboussiIJET2016,

author    = {Anis Kalboussi and Omar Mazhoud and Ahmed Hadj Kacem},
title     = {Functionalities provided by Annotation Systems for Learners in Educational Context: An Overview},
journal   = {International Journal of Emerging Technologies in Learning},
volume    = {11},
number    = {2},
pages     = {4-11},
year      = {2016},
doi={10.3991/ijet.v11i02.5166}
}