Atanassov, Krassimir T  <br/><br/>
On same of the smarandaches problems 

 - Lupton:   American Research Press,   1999 
 - 88p. 
<br/><br/><label>ISBN: </label>1-879585-72-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problems
<br/><br/><label>Universal Decimal Class. No.: </label>519.6  / N9