[1] Aubert K. E.: Theory of $x$-ideals. Acta Math. 107, 1 - 52 (1962). DOI 10.1007/BF02545781 | MR 0148773 | Zbl 0108.26002

[2] Gilmer R., Ohm J.: Primary ideals and valuation ideals. Trans. Amer. Math. Soc. 117, 237-250 (1965). DOI 10.1090/S0002-9947-1965-0169871-4 | MR 0169871 | Zbl 0133.29203

[3] Lal H.: Commutative semi-primary semigroups. Czechoslovak Math. J. 25 (100), 1 - 3 (1975). MR 0369579 | Zbl 0307.20038

[4] Satyanarayana M.: Generalized primary rings. Math. Ann. 179, 109-114 (1969). DOI 10.1007/BF01350122 | MR 0240094 | Zbl 0169.05501