@article{GT_2007_11_3_a0,
     author = {Farber, Michael and Sch\"utz, Dirk},
     title = {Cohomological estimates for {cat(X,\ensuremath{\xi})}},
     journal = {Geometry & topology},
     pages = {1255--1288},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {2007},
     doi = {10.2140/gt.2007.11.1255},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2007.11.1255/}
}