@article{COCV_2019__25__A35_0,
     author = {Cui, Qing and Deng, Li and Zhang, Xu},
     title = {Second order optimality conditions for optimal control problems on {Riemannian} manifolds},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     publisher = {EDP-Sciences},
     volume = {25},
     year = {2019},
     doi = {10.1051/cocv/2018028},
     zbl = {1444.49012},
     mrnumber = {4003463},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv/2018028/}
}