@article{CRMATH_2005__340_5_353_0,
     author = {Will, Pierre},
     title = {Lagrangian decomposability of some two-generator subgroups of $ \mathrm{PU}(2,1)$},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {353--358},
     publisher = {Elsevier},
     volume = {340},
     number = {5},
     year = {2005},
     doi = {10.1016/j.crma.2005.01.008},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2005.01.008/}
}