The European Voynich Alphabet, or EVA was created by René Zandbergen and Gabriel Landini in 1998 as a system to transcribe the various graphemes ("letters") which make up the text of the Voynich Manuscript into Roman characters.
With EVA, every Voynich sign is represented by a roughly similar-looking letter of the Latin alphabet.
The English language Wikipedia page on the topic is [1] was deleted in October 2013 (and still absent March 201*), but the equivalent Wikipedia pages in h French, Hungarian, Latin, Portuguese, Spanish , Russian and Ukrainian remain. It also forms a component of the German Wikipedia page on the Voynich Manuscript [2]. The French and Spanish pages are the most extensive.
An article by Zandbergen on the EVA can be found here. The WayBack Machine page is here.