Paper on arxiv.org - A. Ulyanenkov - 2016

[Koen G]

Abstract: The Voynich manuscript (VMS) is the book dated as
15th - 16th century, written using specific and smart coding
methods. This article describes the methods how it was
analyzed and how coding keys were found. It is also shows the
VMS author’s method of coding.

Sometimes reading the abstract is really enough...