@article{TIMM_2021_27_2_a18,
     author = {M. I. Sumin},
     title = {Regularization of the {Pontryagin} maximum principle in a convex optimal boundary control problem for a parabolic equation with an operator equality constraint},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {221--237},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2021_27_2_a18/}
}