Nudel’man, M. A. (2005). On Initial Data of a Simple Conservative Scattering System That Can Be Transferred to Zero by a Sequence of Inputs from <i>l </i&gt;². Ukrains’kyi Matematychnyi Zhurnal, 57(4), 559–563. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/3621