@article{ASNSP_2013_5_12_4_823_0,
     author = {Martio, Olli},
     title = {Quasiminimizing properties of solutions to {Riccati} type equations},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {823--832},
     publisher = {Scuola Normale Superiore, Pisa},
     volume = {Ser. 5, 12},
     number = {4},
     year = {2013},
     mrnumber = {3184570},
     zbl = {1321.35025},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_2013_5_12_4_823_0/}
}