first let me give you one more friendly welcome - before I have to tell you that at this moment in time, there is not one single book available in English.
Hopefully, this is going to change RSN (*). I am currently talking to a major US publisher about writing a book for them: so in a couple of months you may find my first English book here.
Until then, you may want to have a look at my other publications, most of which are in German. If so, please go back to the entry page.
H.-G. Eßer