@article{10_4064_sm174_1_8,
     author = {Hans Havlicek and Peter \v{S}emrl},
     title = {From geometry to invertibility preservers},
     journal = {Studia Mathematica},
     pages = {99--109},
     publisher = {mathdoc},
     volume = {174},
     number = {1},
     year = {2006},
     doi = {10.4064/sm174-1-8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm174-1-8/}
}