@article{10_2140_agt_2007_7_2165,
     author = {Ottosen, Iver and B\"okstedt, Marcel},
     title = {String cohomology groups of complex projective spaces},
     journal = {Algebraic and Geometric Topology},
     pages = {2165--2238},
     year = {2007},
     volume = {7},
     number = {4},
     doi = {10.2140/agt.2007.7.2165},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2007.7.2165/}
}