BibTex format
@article{Helm:2012:10.1007/s11856-011-0162-x,
author = {Helm, D},
doi = {10.1007/s11856-011-0162-x},
journal = {ISRAEL JOURNAL OF MATHEMATICS},
pages = {37--80},
title = {A geometric Jacquet-Langlands correspondence for U(2) Shimura varieties},
url = {http://dx.doi.org/10.1007/s11856-011-0162-x},
volume = {187},
year = {2012}
}