  Global pointwise estimates are obtained for quasilinear Lane-Emden-type
systems involving measures in the "sublinear growth" rate. We give necessary
and sufficient conditions for existence expressed in terms of Wolff's
potential. Our approach is based on recent advances due to Kilpel\"{a}inen and
Mal\'{y} in the potential theory. This method enables us to treat several
problems, such as equations involving general quasilinear operators and
fractional Laplacian.
