On bifurcation and local rigidity of triply periodic minimal surfaces in   $\mathbb R^3$
  We use bifurcation theory to determine the existence of infinitely many new examples of triply periodic minimal surfaces in $\mathbb R^3$. These new examples form branches issuing from the H-family, the rPD-family, the tP-family, and the tD-family, that converge to some degenerate embedding of the families. As to nondegenerate triply periodic minimal surfaces, we prove a perturbation result using an equivariant implicit function theorem. 
Miyuki Koiso, Paolo Piccione, Toshihiro Shoda
math.DG