1. Levine, N., Semi-open sets and semi-continuity in topological spaces. Amer. Math.Monthly, 1963. 70(1): p. 36-41.
2. Kasahara, S., Operation-Compact Spaces. Math. Japon, 1979(24): p. 97-105.
3. Ogata, H., Operations on Topological Spaces and Associated Topology. Math. Japon, 1991. 36(1): p. 175-184.
4. Ahmad, B. and S. Hussain, Properties of γ-Operations on Topological Spaces. Aligarh Bull.Math, 2003. 1(22): p. 45-51.
5. Hussain, S. and B. Ahmad, On Minimal γ -Open Sets. Eur. J. Pure Appl. Maths, 2009. 3(2): p. 338-351.
6. Khalaf, A.B. and S.F. Namiq, New types of continuity and separation axiom based operation in topological spaces. M. Sc. Thesis, University of Sulaimani, 2011.
7. Khalaf, A.B. and S.F. Namiq, Lammda sub c-Open Sets and Lammda sub c-Separation Axioms in Topological Spaces. Journal of Advanced Studies in Topology, 2013. 4(1): p. 150-158.
8. Namiq, S.F., Lammda-R0 and Lammda-R1 Spaces. Journal of Garmyan University, 2014. 4(3).
9. F.Namiq, S., Contra 〖(λ,γ)〗^*-Continuous Functions. Journal of Garmyan University, 2017.
10. B.Khalaf, A. and S.F. Namiq, Generalized Lammda-Closed Sets and (Lammda,Gamma)^*-Continuous Journal of Garmyan University, 2017: p. 2310-0087.
11. B.Khalaf, A. and S.F. Namiq, λ_βc-Connected Spaces and λ_βc-Components. Journal of Garmyan University, 2017.
12. Khalaf, A.B., H.M. Darwesh, and S.F. Namiq, λ_c-Connected Space Via λ_c-Open Sets. Journal of Garmyan University, 2017.
13. Namiq, S.F., λ_sc-open sets and topological properties. Journal of Garmyan University, 2014.
14. Namiq, S.F., λ_c-Separation Axioms Via λ_c-open sets. International Journal of Scientific & Engineering Research May-2017. 8.
15. Namiq, S.F., λ_sc-Connected Spaces Via λ_sc-Open Sets. Journal of Garmyan University, 2017.
16. Darwesh, H.M., S.F. Namiq, and W.K. Kadir, Maximal λc-Open Sets. ICNS-2016, 2017.
17. Namiq, S.F., λ-Connected Spaces Via λ-Open Sets. Journal of Garmyan University, 2015.
18. Darwesh, H.M. and S.F. Namiq, On Minimal λ_βc-Open Sets Journal of Garmyan University, 2017.
19. N. Levine, Generalized closed sets in topological spaces, Rend. Circ. Mat. Palermo 19 (1970) 89–96.
)