If I may, thanks to matesic for uploading this to IMSLP, a favorite "unsung" quartet of mine for over a decade now.
And now he's gone and followed this up with a very good indeed recording of the same composer's F major string quintet, too... (with I think maybe a better performance of the slow movement than the Acantus and Hartman give it, but still that - really good and very often-played by me - CD is NLA anyway! Recommended :) )