@ARTICLE{EpplerTroeltzsch1986,
author = {Eppler, K. and Tr{\"o}ltzsch, F.},
title = {On switching points of optimal controls for coercive parabolic boundary
control problems},
journal = {Optimization. A Journal of Mathematical Programming and Operations
Research},
year = {1986},
volume = {17},
pages = {93--101},
number = {1},
doi = {10.1080/02331938608843105},
issn = {0233-1934}
}
@ARTICLE{Schittkowski1979,
AUTHOR = {Schittkowski, K.},
TITLE = {Numerical solution of a time-optimal parabolic boundary value
control problem},
JOURNAL = {Journal of Optimization Theory and Applications},
VOLUME = {27},
YEAR = {1979},
NUMBER = {2},
PAGES = {271--290},
ISSN = {0022-3239},
DOI = {10.1007/BF00933231},
}
@ARTICLE{Troeltzsch1984,
AUTHOR = {Tr{\"o}ltzsch, F.},
TITLE = {The generalized bang-bang-principle and the numerical solution
of a parabolic boundary-control problem with constraints on
the control and the state},
JOURNAL = {Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik},
VOLUME = {64},
YEAR = {1984},
NUMBER = {12},
PAGES = {551--556},
ISSN = {0044-2267},
DOI = {10.1002/zamm.19840641218},
}