EMDoku

http://www.emdoku.de/cgi-bin/LookDokumentation.cgi?key1=Name&string1=Milde-Meissner&key2=Jahr&string2=1964&nkeys=2&format=ausf%C3%BChrlich&subm1=Suche+starten!

The International Documentation of Electroacoustic Music (EMDoku) is an extensive online database, which contains detailed information on over 39000 works, 8000 composers as well as media (CD, DVD, tape, etc.), labels and studios.