I know that the RIC-cars of the East-European broad-gauge railways the only ones are that are meant for the standard gauge that is used in more western parts of Europe. My inspiration was this:
http://www.railfaneurope.net/pix_frameset.html picture with an nighttrain from Krakow to Kiev, and because trains like this one are very nice to see, I want to know what types of cars are used in other nighttrains that have a gauge-changing. Times are very easy to find for me, so you all don't have to care about that.