@article{CM_1974__28_1_33_0,
     author = {Hansen, Vagn Lundsgaard},
     title = {On the fundamental group of a mapping space. {An} example},
     journal = {Compositio Mathematica},
     pages = {33--36},
     publisher = {Noordhoff International Publishing},
     volume = {28},
     number = {1},
     year = {1974},
     mrnumber = {341477},
     zbl = {0282.55009},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1974__28_1_33_0/}
}