Telephone surveys (CATI), Internet surveys (CAWI), paper questionnaires (PAPI), face-to-face surveys with electronic devices (WATI)...
General press, specialised press, Internet, Interviews with professionals of the sector...
Telephone surveys (CATI), Internet surveys (CAWI), paper questionnaires (PAPI), face-to-face surveys with electronic devices (WATI)...
General press, specialised press, Internet, Interviews with professionals of the sector...