1. Foundations of Constructive Mathematics: Metamathematical Studies;Beeson,1985
2. Varieties of Constructive Mathematics;Bridges,1987
3. H. Ishihara, Informal Constructive Reverse Mathematics, CDMTCS Research Report No. 229, CDMTCS, The University of Auckland, 2004, Sūrikaisekikenkyūsho Kōkyūroku, Research Institute for Mathematical Sciences, Kyoto University (in press)
4. The Foundations of Intuitionistic Mathematics: Especially in Relation to Recursive Functions;Kleene,1965
5. Heine–Borel does not imply the Fan theorem;Moerdijk;J. Symbolic Logic,1984