1. Aliabad, A.R., Parsinia, M.: Remarks on subrings of $$C(X)$$ of the form $$I+C^*(X)$$. Quaest. Math. 40(1), 63–73 (2017)
2. Aliabad, A.R., Parsinia, M.: $$z_R$$-ideals and $$z_R^\circ $$-ideals in subrings of $${\mathbb{R}}^X$$. Iran. J. Math. Sci. Inform. 14(1), 55–67 (2019)
3. Azarpanah, F.: On almost $$P$$-spaces, Far East J. Math. Sci. (Special volume), 121–132 (2000)
4. Azarpanah, F., Parsinia, M.: On the sum of z-ideals in subrings of C(X), J. Commut. Algebra (to appear)
5. Azarpanah, F., Karamzadeh, O.A.S., Rezaei Aliabad, A.: On $$z^\circ $$-ideals in $$C(X)$$. Fund. Math. 160, 15–25 (1999)