Sh:5

Bib entry
@article{Sh:5,
 author = {Shelah, Saharon},
 title = {{On languages with non-homogeneous strings of quantifiers}},
 journal = {Israel J. Math.},
 fjournal = {Israel Journal of Mathematics},
 volume = {8},
 year = {1970},
 pages = {75--79},
 issn = {0021-2172},
 doi = {10.1007/BF02771553},
 mrclass = {02.35},
 mrnumber = {0262064},
 mrreviewer = {N. C. A. da Costa},
 doi = {10.1007/BF02771553}
}