Oh yes, on both counts. Nilson is a favourite, though I must admit that I haven't read a lot of his "straight" fiction; but his semi-non-fiction works on philosophy/astronomy/physics are among the best things I've read.
Dagerman is getting reprinted this year, about time.
Out of idle curiosity I did a quick search at the major online books stores, it appears that only one of Kyrklund's works is currently in print: Polyfem F?rvandlad.
There should be a special tribunal in The Hague for criminally negligent publishers.