@article{10_2140_agt_2010_10_87,
     author = {Harper, John E},
     title = {Bar constructions and {Quillen} homology of modules over operads},
     journal = {Algebraic and Geometric Topology},
     pages = {87--136},
     year = {2010},
     volume = {10},
     number = {1},
     doi = {10.2140/agt.2010.10.87},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2010.10.87/}
}