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Abstract for On the Spectra of Certain Classes of Room Frames by 
Jeffrey H. Dinitz, Douglas R. Stinson and L. Zhu 

In this paper we study the spectra of certain classes of Room frames.
The three spectra are 
incomplete Room squares, uniform Room frames
and Room frames of type $2^ut^1$.  These problems have been studied in numerous
papers over the years; in this paper, we complete the three spectra except
for one possible exception in each case.

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