Singer, Kristiina, 		Singer, Georg, 		Lepik, Krista, 		Norbisrath, Ulrich, AND 		Pruulmann-Vengerfeldt, Pille.
" Search Strategies of Library Search Experts" <em>Qualitative and Quantitative Methods in Libraries</em> [Online], Volume 1 Number 1 (14 May 2017)