@article{HHA_2016_18_2_a17,
     author = {Sergei O. Ivanov and Roman Mikhailov and Jie Wu},
     title = {On nontriviality of certain homotopy groups of spheres},
     journal = {Homology, homotopy, and applications},
     pages = {337--344},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2016},
     doi = {10.4310/HHA.2016.v18.n2.a18},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4310/HHA.2016.v18.n2.a18/}
}