Ok. I have opened exemplary *.fb2 in Notepad++ and now I know to create fb2 file whch is fully supported by FBreader. The code looks like html, but it has its own tags. For example:
Code:
<description></description>
<author><first-name></first-name><last-name></last-name></author>
<title></title>
<code></code>
<subtitle></subtitle>
<empty-line/>
So now I gonna start creating *.fb3 files instead *.epub.