Bell, R.E. <br/><br/>
Time distribution of positron annihilation in liquids and solids. 

 - Chalk River :  AECL,  1953. 
 - v. 90 (no. 4) p. 644-654 
<br/><br/><label>ISSN: </label>0067-0367 
<br/><br/><label>Standard No.: </label>AECL-46