Hello Alain
Plenty of information is out there, via Google - here are a few examples readily available, including the news that a book about Courland, and the May 8 1945 evacuations is on the way.
http://fw190.hobbyvista.com/sweden.htm
http://www.airwarpublications.com/bo...s-in-the-works
"The aerial action over Courland continued until the very end of the Second World War, and the book will include a detailed description of the desperate Luftwaffe evacuation from the Courland pocket on 8 May 1945."
http://forum.12oclockhigh.net/showthread.php?t=36628
Allan