রেফারেন্স পুস্তিকা

283
N   :     
k

d p
G  N   
             
             
 h      
 
 

W (Q)        W (Q)

 
p    
   1 
3    
   
  
 
p   m 
   4 
2    
   
  
 
p      ,  4  2
 
p   m   ,  1  3 

 

  