M. Chemtob, P. Hosteins. Searching singlet extensions of the supersymmetric standard model in $Z_{6−II}$ orbifold compactification of heterotic string.
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2010, 68 (3-4), pp.539-559.
⟨10.1140/epjc/s10052-010-1377-4⟩.
⟨cea-02905677⟩