%0 Journal Article %A D. D. Kiselev %A B. B. Lur'e %T Ultrasolvability and singularity in the embedding problem %J Zapiski Nauchnykh Seminarov POMI %D 2013 %P 113-126 %V 414 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2013_414_a6/ %G ru %F ZNSL_2013_414_a6