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    • Irreducible Heegner divisors in the period space of Enriques surfaces 

      Koca, C.; Sertöz, A. S. (World Scientific Publishing Co. Pte. Ltd., 2008)
      Reflection walls of certain primitive vectors in the anti-invariant sublattice of the K3 lattice define Heegner divisors in the period space of Enriques surfaces. We show that depending on the norm of these primitive ...
    • Which singular K3 surfaces cover an Enriques surface 

      Sertöz, A. S. (American Mathematical Society, 2005)
      We determine the necessary and sufficient conditions on the entries of the intersection matrix of the transcendental lattice of a singular K3 surface for the surface to doubly cover an Enriques surface.