Crossovers in the Two Dimensional Ising Spin Glass with ferromagnetic   next-nearest-neighbor interactions
  By means of extensive computer simulations we analyze in detail the two dimensional $\pm J$ Ising spin glass with ferromagnetic next-nearest-neighbor interactions. We found a crossover from ferromagnetic to ``spin glass'' like order both from numerical simulations and analytical arguments. We also present evidences of a second crossover from the ``spin glass'' behavior to a paramagnetic phase for the largest volume studied. 
G. Parisi, J. J. Ruiz-Lorenzo and D. Stariolo