Sh:257

Bib entry
@article{Sh:257,
 author = {Blass, Andreas R. and Shelah, Saharon},
 title = {{Ultrafilters with small generating sets}},
 journal = {Israel J. Math.},
 fjournal = {Israel Journal of Mathematics},
 volume = {65},
 number = {3},
 year = {1989},
 pages = {259--271},
 issn = {0021-2172},
 doi = {10.1007/BF02764864},
 mrclass = {03E05 (03E35)},
 mrnumber = {1005010},
 mrreviewer = {Marion Scheepers},
 doi = {10.1007/BF02764864}
}