Taky https://translate.google.cz/translate?sl=sv&tl=en&js=y&prev=_t&hl=cs&ie=UTF-8&u=https%3A%2F%2Fweb.archive.org%2Fweb%2F20110413065726%2Fhttp%3A%2F%2Fwww.ict.kth.se%2Fcourses%2FIS1391%2Fvfd%2Findex.htm&edit-text= (http://goo.gl/0jbVhc) -- Jirka