I found out that at least two of Jane Yolen's books were translated into Danish (I think one actually is in Swedish, but it came up as Danish):
1) Den Rode Drage (a slash through the o, iykwim), Glydendal 19862) Ugle Mane (a circle above the a, aiykwim), Carlsen Forlag 1989
She has at least 475 books out and about according to OCLC FirstSearch (but a few are translations of her books from English :D).
I'm wondering if you're still interested :)
Phyllis (aka Sidhe Uaine or Gaia Euphoria)