@article{ND_2023_19_2_a5,
     author = {K. Soga},
     title = {A {Remark} on {Tonelli{\textquoteright}s} {Calculus} of {Variations}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {239--248},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ND_2023_19_2_a5/}
}