Nurmia, Matti <br/><br/>
The Heat Formation of TlCl-TlBr Mixed Crystals: a High-Temperature Differential Calorimetric Investigation 

 - Helsinki :   Suomalainen Tiedeakatemia,   1956. 
 - 27 p. ;   18 cm. 
 - Annales Academiae Scientiarum Fennicae. Serie A. I. Mathematica ;   234 .