@article{10_2140_agt_2001_1_1,
     author = {Schneiderman, Rob and Teichner, Peter},
     title = {Higher order intersection numbers of 2{\textendash}spheres in 4{\textendash}manifolds},
     journal = {Algebraic and Geometric Topology},
     pages = {1--29},
     year = {2001},
     volume = {1},
     number = {1},
     doi = {10.2140/agt.2001.1.1},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2001.1.1/}
}