Koldo Zabaleta Diego López-de-Ipiña Enrique Sanz Ane Irizar-Arrieta Vincenzo Cartelli Giuseppe Di Modica Orazio Tomarchio Human Computation to Enhance E-Service Consumption among Elderlies. 1221 2018 UCAmI https://doi.org/10.3390/proceedings2191221 conf/ucami/2018 db/conf/ucami/ucami2018.html#ZabaletaLSICMT18