Your best chances are to limit their area and provide heat. I have been doing it with nucs for quite a few years now with good results. Finsky is the master at it, check his post here -> http://forum.beemaster.com/index.php?topic=4089.0
This year I will be doing 2 5 frame nucs in a common deep with a divider. I also use 7watt nite lights instead of the more expensive terrarium heaters.