Baumgartner, J. and Dordal, P., Adjoining dominating functions, this Journal, vol. 50 (1985), pp. 94–101.
Blass, A., Combinatorial cardinal characteristics of the continuum, Handbook of set theory (Foreman, Matthew and Kanamori, Akihiro, editors), vol. 1, Springer, 2010, pp. 395–490.
Blass, A. and Shelah, S., Ultrafilters with small generating sets, Israel Journal of Mathematics, vol. 65 (1984), pp. 259–271.
Brendle, J., Mob families and mad families, Archive for Mathematical Logic, vol. 37 (1998), pp. 183–197.
Brendle, J., Mad families and ultrafilters, Acta Universitatis Carottnae. Mathematica et Physica, vol. 49 (2007), pp. 19–35.
Fischer, V., The consistency of arbitrarily large spread between the bounding and the splitting numbers, doctoral dissertation, York University, 2008.
Fischer, V. and Steprāns, J., The consistency of , Fundamenta Mathematicae, vol. 201 (2008), pp. 283–293.
Hechler, S., Short complete nested sequences in βℕ/ℕ and small maximal almost-disjoint families, General Topology and its Applications, vol. 2 (1972), pp. 139–149.
Shelah, S., On cardinal invariants of the continuum, Contemporary Mathematics, vol. 31 (1984), pp. 184–207.
Shelah, S., Two cardinal invariants of the coninuum and FS linearly ordered iterated forcing, Acta Mathematica, vol. 192 (2004), pp. 187–223.