1. Ball, R.N., Walters-Wayland, J.:
$$C$$
C
- and
$$C^{*}$$
C
∗
-quotients in pointfree topology. Dissert. Math. (Rozprawy Mat.) 412, 62 (2002)
2. Banaschewski, B.: Compact regular frames and the Sikorski theorem. Kyungpook Math. J. 28, 1–14 (1988)
3. Banaschewski, B.: Radical ideals and coherent frames. Comment. Math. Univ. Carolin. 37, 349–370 (1996)
4. Banaschewski, B.: The real numbers in pointfree topology. Textos de Mat. Série B, No. 12. Departamento de Matemática da Universidade de Coimbra (1997)
5. Banaschewski, B.: Pointfree topology and the spectra of
$$f$$
f
-rings. In: Ordered Algebraic Structures, pp. 123–148. Kluwer Academic Publishers, Dordrecht (1997)