Hi Roman, >Refering to the history of the Mizar Project (not only the system), >you can find at: >http://mizar.org/people/romat/MatRud2005.pdf >http://mizar.org/people/romat/MatRud2005.bib Maybe I shouldn't aim for a book about Mizar by Trybulec/Wiedijk, but by Matuszewski/Trybulec/Wiedijk then :-) But seriously: thanks for the pointer. Freek