1. Avigad J, Boundas CV (2007) Philosophy of mathematics, Edinburgh companion to twentieth-century philosophies. Edinburgh University Press, Edinburgh
2. Bagaria J (2002) Natural axioms of set theory and the continuum problem, Instituci´o Catalana de Recerca i Estudis Avan¸cats (ICREA) and Departament de L`ogica, Hist`oria i Filosofia de la Ci`encia. Universitat de Barcelona, Baldiri Reixac, s/n 08028 Barcelona, Catalonia (Spain)
3. Bagchi A, Wells C (1998) Varieties of mathematical prose. Primus 8(2):116–136
4. Baronett S (2008) Logic, 2nd edn. Oxford University Press, Oxford
5. Bell JL (1989) The philosophy of mathematics. University of Western Ontario, London