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[<khaled_bouamama@univ-setif.dz>]

Dear Abinit users,
I am doing calculation on KNbO3, I cann't find the orthorhombic structure Amm2
(38). 
In the input file, I have used the primitive cell from Kumada et al. materials
research Bulletin 42, (2007) 1856.
Thank you for your help in advance
Khaled

inptu file:
--------------------
 acell 7.5079 10.762 10.811

 rprim  1.0  0.0  0.0
        0.0  0.5 -0.5
        0.0  0.5  0.5

ntypat 4
znucl 19 41 8 8 
natom 5 
 typat 1 2 3 4 
  xred
0.0      0.0      0.015 
0.5      0.0      0.5 
0.0      0.0      0.534
0.5      0.258    0.293 
 
 ecut 20  
 kptopt 1
 ngkpt 4 8 8 
 nshiftk 1
 nstep  100
 shiftk 0.5 0.5 0.5
toldfe 1.0d-8
diemac 12.0