[Prasenjit Sanyal]

For force coefficient some journals are saying that
Cfx=Fx/(o.5*U^2*p*Ax) and Cfy =Fy/(o.5*U^2*p*Ay)
And some journals are saying that
Cfx=Fx/(o.5*U^2*p*Ap) and Cfy=Fy/(o.5*U^2*p*Ap)
For moment coefficient some journals are saying that
Cmx=Mx/( (o.5*U^2*p*Ay)*0.5H)
And some are saying that its
Cmx=Mx/( (o.5*U^2*p*Ap)*H)
Which definition is the correct? please say I am very confused
Thanks in advance