This dataset was published online in 2007 as the “Typological Database of Intensifiers and Reflexives” (https://linktype.iaa.uni-jena.de/tdir/info.htm; creators: Volker Gast, Daniel Hole, Ekkehard König, Peter Siemund, Stephan Töpper). More information can be found in Gast (2009):

Gast, Volker. 2009. A contribution to ‘two-dimensional’ language description: the Typological Database of Intensifiers and Reflexives. In Everaert, Martin & Musgrave, Simon & Dimitriadis, Alexis (eds.), The use of databases in cross-linguistic studies, 209–234. Berlin: De Gruyter Mouton. (doi:10.1515/9783110198744.209)