@article{EMJ_2023_14_1_a3,
     author = {G. Bourdaud},
     title = {An introduction to composition operators in {Sobolev} spaces},
     journal = {Eurasian mathematical journal},
     pages = {39--54},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2023_14_1_a3/}
}