Swedish characters in network volume name

Is there any way to access a network volume with an “Ã¥” in the volume name?
…or do I have to convert it?

tell application “Finder”

if not (disk "Byrå" exists) then
	mount volume "afp://10.0.30.20/Byrå" as user name "name" with password "password"
	
end if

end tell