@article{ARM_1969__5_2_a3,
     author = {Mangeron, D. and O\u{g}uzt\"oreli,~M.~N.},
     title = {Optimal problems in distributed parameter control systems. {I}},
     journal = {Archivum mathematicum},
     pages = {85--92},
     publisher = {mathdoc},
     volume = {05},
     number = {2},
     year = {1969},
     mrnumber = {0290843},
     zbl = {0286.49014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1969__5_2_a3/}
}