@misc{10_5427_jsing_2020_21a,
     title = {The flat geometry of the {I_1} singularity: (x,y) -> (x,xy,y^2,y^3)},
     journal = {Journal of Singularities},
     pages = {1--14},
     publisher = {mathdoc},
     volume = {21},
     year = {2020},
     doi = {10.5427/jsing.2020.21a},
     url = {http://geodesic.mathdoc.fr/articles/10.5427/jsing.2020.21a/}
}