@article{10_4153_S000843952300070X,
     author = {Bay\'on, Luis and Ayuso, Pedro Fortuny and Grau, Jos\'e Mar{\'\i}a and Ruiz, Maria del Mar},
     title = {Entry and leaving arcs of turnpikes: their exact computation in the calculus of variations},
     journal = {Canadian mathematical bulletin},
     pages = {227--243},
     year = {2024},
     volume = {67},
     number = {1},
     doi = {10.4153/S000843952300070X},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S000843952300070X/}
}