DJI – The qualitative pretest interview for questionnaire development: outline of programme and practice https://www.dji.de/veroeffentlichungen/literatursuche/detailansicht/literatur/30308-the-qualitative-pretest-interview-for-questionnaire-development-outline-of-programme-and-practice.html?no_cache=1&print=1&cHash=adf7753a2ab107760d07e1e129dfa0ac
no_cache=1&cHash=adf7753a2ab107760d07e1e129dfa0ac Links: [1] https://link.springer.com