1. Application for dark sky certification;South Africa: !Ae!Hai Kalahari Heritage Park,2019
2. Astronomy via starlight tourism in Alqueva, Portugal;Allen;BBC Sky at Night Magazine,2013
3. Sky brightness levels before and after the creation of the first international dark sky reserve, Mont-Mégantic Observatory, Québec, Canada;Aubé;Journal of Quantitative Spectroscopy & Radiative Transfer,2014
4. Visitors' memories of wildlife tourism: Implications for the design of powerful interpretive experiences;Ballantyne;Tourism Management,2011
5. Astrotourism-possibilities for development in Serbia;Belij;Bulletin of the Geographic Society of Serbia,2015