Hole-hole superconducting pairing in the t-J model induced by spin-wave   exchange
  We study numerically the hole pairing induced by spin-wave exchange. The contact hole-hole interaction is taken into account as well. It is assumed that antiferromagnetic order is preserved at all scales relevant to pairing. The strongest pairing is obtained for the d-wave symmetry of the gap. Dependence of the value of the gap on hole concentration and temperature is presented. For the critical temperature we obtain Tc about 100 K at the hole concentration delta = 0.2-0.3. 
V.I. Belinicher, A.L. Chernyshev, A.V. Dotsenko, and O.P. Sushkov