Sh:514

Bib entry
@incollection{Sh:514,
 author = {Magidor, Menachem and Shelah, Saharon},
 title = {{$\mathrm{Bext}^2(G,T)$ can be nontrivial, even assuming GCH}},
 booktitle = {{Abelian group theory and related topics (Oberwolfach, 1993)}},
 series = {Contemp. Math.},
 volume = {171},
 year = {1994},
 pages = {287--294},
 doi = {10.1090/conm/171/01778},
 mrclass = {20K40 (03E35 03E55)},
 mrnumber = {1293148},
 mrreviewer = {Pin Chao Wang},
 doi = {10.1090/conm/171/01778},
 publisher = {Amer. Math. Soc., Providence, RI},
 note = {\href{https://arxiv.org/abs/math/9405214}{arXiv: math/9405214}},
 arxiv_number = {math/9405214}
}