%0 Journal Article %A N. V. Lyubashevskaya %A A. P. Chupakhin %T Basis of differential invariants of symmetry group of Green--Naghdi equations %J Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki %D 2009 %P 52-62 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VUU_2009_2_a5/ %G ru %F VUU_2009_2_a5