Sh:65

Bib entry
@article{Sh:65,
 author = {Devlin, Keith J. and Shelah, Saharon},
 title = {{A weak version of $\diamondsuit$ which follows from $2^{\aleph_0}<2^{\aleph_1}$}},
 journal = {Israel J. Math.},
 fjournal = {Israel Journal of Mathematics},
 volume = {29},
 number = {2-3},
 year = {1978},
 pages = {239--247},
 issn = {0021-2172},
 doi = {10.1007/BF02762012},
 mrclass = {02K05 (04A20 05C15)},
 mrnumber = {0469756},
 mrreviewer = {Paul C. Eklof},
 doi = {10.1007/BF02762012}
}