Uses of explicit and implicit tags in social bookmarking. - Enrique Estellés Arolas; Fernando González-Ladrón-de-Guevara (J. Assoc. Inf. Sci. Technol., 2012)

Towards an integrated crowdsourcing definition. - Enrique Estellés Arolas; Fernando González-Ladrón-de-Guevara (J. Inf. Sci., 2012)