The study is being conducted by the University of Berne and is now available in its third edition.
The study is published in German and available here. It can also be downloaded as a PDF file there.
The study created a lot of reactions in the media, among others there was a 3-minute contribution on television (10 vor 10, a news broadcast of SRF):
Many other articles have been published about it, for example in Computerworld, Netzwoche, Heise, etc. Here is a small selection (all German)::