Equations of the form DELTAu + K(Absolute value of x)\u\p-2u = h(Absol
ute value of x), x is-an-element-of R(N), N greater-than-or-equal-to 3
, with p > 1 are considered in the class of real-valued radial functio
ns. A priori and asymptotic estimates that are best possible in the cl
ass of equations under consideration are established on the basis of a
new integral identity. Existence theorems are obtained for entire rad
ial solutions. Bibliography: 7 titles.