@article{Gridneva2014on,
author={Gridneva, I.. and Fedulova, L..},
title={On the boundedness of hamiltonian operators},
journal={Actual directions of scientific researches of the XXI century: theory and practice},
publisher={FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov},
year={2014},
pages={451-453},
volume={2},
issue={4},
}