  In our previous study [Phys. Rev. B 86, 201104 (2012)] we introduced the so
called quasi-non-uniform gradient-level exchange-correlation approximation
(QNA) and demonstrated it's strength in producing highly accurate equilibrium
volumes for metals and their alloys within the density-functional theory. In
this paper we extend the scheme to include the accuracy of bulk modulus as an
additional figure of merit and show that this scheme is flexible enough as to
allow the computation of accurate equilibrium volumes and bulk moduli at the
same time. The power and feasibility of this scheme is demonstrated on NiAl and
FeV binary alloys.
