@article{COMIM_2021_29_1_a7,
     author = {Do, Thoan and Prince, Geoff},
     title = {The inverse problem in the calculus of variations: new developments},
     journal = {Communications in Mathematics},
     pages = {131--149},
     year = {2021},
     volume = {29},
     number = {1},
     mrnumber = {4251311},
     zbl = {07413361},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/COMIM_2021_29_1_a7/}
}