When I was researching the early history of Beranek at Skrdlovice, for the book, discovering the links between CMS and Emanuel Beranek and M. Veliskova and others who worked at Beranek in the early days, explained to me a lot why we find the distinction between CMS and Beranek very difficult, after all, numerous techniques and patterns travelled from CMS to Skrdlovice virtually unchanged, a fact which I was happy to try to help document. For some pieces, such as the ones in discussion are really hard to be sure about at times. I still find this a difficult area at times. A really fascinating small area of glass history, that is not yet fully documented, CMS output especially. The CMS pieces are really hard to find. I liked the link you posted Rocco to the Phd article from the Czech Republic regarding this area, unfortunately, it was too late to add it to the book this time.