We present a new family of embedded doubly periodic minimal surfaces, of which the symmetry group does not coincide with any other example known before.
We introduce a new technique to solve period problems on minimal surfaces called limit-method. If a family of surfaces has Weierstrass-data converging to the data of a known example, and this presents a transversal solution of periods, then the origi
nal family contains a sub-family with closed periods.
