@article{10_4064_sm_66_2_107_117,
     author = {Siegfried Hahn},
     title = {Ein {Homotopieerweiterungssatz} f\"ur konzentrierende mengenwertige {Abbildungen} in lokalkonvexen topologischen {Vektorr\"aumen}},
     journal = {Studia Mathematica},
     pages = {107--117},
     year = {1979},
     volume = {66},
     number = {2},
     doi = {10.4064/sm-66-2-107-117},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-66-2-107-117/}
}