@article{10_2140_agt_2011_11_1893,
     author = {Laures, Gerd},
     title = {Toda brackets and congruences of modular forms},
     journal = {Algebraic and Geometric Topology},
     pages = {1893--1914},
     year = {2011},
     volume = {11},
     number = {4},
     doi = {10.2140/agt.2011.11.1893},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2011.11.1893/}
}