Authors: Plamen Nikolov Penchev (see my internet page) and Radina Stoyanova.
Copy Right: 1999, Plamen Penchev & Radina Stoyanova.
Licence agreement: You can use free this material. But if you deciminate it in any form always cite the authors.
To view correctly the bulgarian text you need to have installed Hebar
font. You can download the some Bulgarian fonts from HERE