@article{10_5427_jsing_2012_5f,
     author = {Javier Fern\'andez de Bobadilla and J\'anos Koll\'ar},
     title = {Homotopically trivial deformations},
     journal = {Journal of Singularities},
     pages = {85--93},
     publisher = {mathdoc},
     volume = {5},
     year = {2012},
     doi = {10.5427/jsing.2012.5f},
     url = {http://geodesic.mathdoc.fr/articles/10.5427/jsing.2012.5f/}
}