Why the quotation marks? Well, it would appear that not is all well in Sven's world and he has his own nemesis who alleges that the books were actually written, in part, by Sven's missus (when she wasn't running her alleged European Porn Empire)!
On the other hand, a biography put together from various other sources can be found here.
It's all very confusing.
Some might say that parts of his work may or may not bear some resemblance in charactersiation and plot, to "All Quiet On The Western Front", IIRC a favoured tome of the protagonist.