@article{GT_2005_9_2_a4,
     author = {Ching, Michael},
     title = {Bar constructions for topological operads and the {Goodwillie} derivatives of the identity},
     journal = {Geometry & topology},
     pages = {833--934},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {2005},
     doi = {10.2140/gt.2005.9.833},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2005.9.833/}
}