Cuka, Peter, Kruczek, Zygmund, Szromek, Adam (2015). OBSERVATION AS A BASIC QUALITATIVE METHOD IN TOURISM RESEARCH CASE STUDY DONOVALY SLOVAKIA. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, INFORMATICS, GEOINFORMATICS AND REMOTE SENSING, 761-766. https://doi.org/10.5593/sgem2015/b21/s8.096