@article{SMJ2_2023_49_1_3_a1,
     author = {Ioffe, Alexander},
     title = {On necessary conditions in the generalized {Bolza} problem},
     journal = {Serdica Mathematical Journal},
     pages = {9--32},
     publisher = {mathdoc},
     volume = {49},
     number = {1{\textendash}3},
     year = {2023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2023_49_1_3_a1/}
}