Pathak, G.P. <br/><br/>
Encyclopaedia of vedic mathematics.-vol 3 
G.P. Pathak 
 - New Delhi  Discovery Publishing Company   2008 
 -  vol 3 .
<br/><br/><label>Subjects--Index Terms: </label>Mathematics- Encyclopaedia 
<br/><br/><label>Universal Decimal Class. No.: </label>51(091)  / PAT.3