@article{SMZ_2007__48_5_55748,
     author = {Pogodaev, N.I.},
     title = {On the properties of solutions to the {Goursat--Darboux} problem with boundary and distributed controls.},
     journal = {Sibirskij Matematicheskij Zhurnal},
     pages = {1116},
     publisher = {mathdoc},
     volume = {48},
     number = {5},
     year = {2007},
     zbl = {1164.93351},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/SMZ_2007__48_5_55748/}
}