%0 Journal Article %A Z. Lu %T A~posteriori error estimates of finite element methods for nonlinear quadratic boundary optimal control problem %J Sibirskij žurnal vyčislitelʹnoj matematiki %D 2011 %P 261-276 %V 14 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJVM_2011_14_3_a2/ %G ru %F SJVM_2011_14_3_a2