@article{StantchevPrietoGonzalezTamm2016, author = {Vladimir Stantchev and Lisardo Prieto-Gonz{\´a}lez and Gerrit Tamm}, title = {Cloud computing service for knowledge assessment and studies recommendation in crowdsourcing and collaborative learning environments based on social network analysis}, journal = {Computers in Human Behavior}, volume = {51}, number = {B}, pages = {762 -- 770}, year = {2016}, }