%0 Journal Article %A N. B. Il'in %A A. N. Pechen' %T Critical point in the problem of maximizing the transition probability using measurements in an $n$-level quantum system %J Teoretičeskaâ i matematičeskaâ fizika %D 2018 %P 445-451 %V 194 %N 3 %U http://geodesic.mathdoc.fr/item/TMF_2018_194_3_a5/ %G ru %F TMF_2018_194_3_a5