R.A Calvo and S.T O’Rourke and J. Jones and K. Yacef and P. Reimann. (2011) "Collaborative Writing Support Tools on the Cloud" IEEE Transactions on Learning Technologies". 4 (1) pp. 88-97. DOI=http://doi.ieeecomputersociety.org/10.1109/TLT.2010.43 (页面存档备份,存于互联网档案馆)
R.A Calvo and S.T O’Rourke and J. Jones and K. Yacef and P. Reimann. (2011) "Collaborative Writing Support Tools on the Cloud" IEEE Transactions on Learning Technologies". 4 (1) pp. 88-97. DOI=http://doi.ieeecomputersociety.org/10.1109/TLT.2010.43 (页面存档备份,存于互联网档案馆)