TY - JOUR AU - N. V. Lyubashevskaya AU - A. P. Chupakhin TI - Basis of differential invariants of symmetry group of Green--Naghdi equations JO - Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki PY - 2009 SP - 52 EP - 62 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VUU_2009_2_a5/ LA - ru ID - VUU_2009_2_a5 ER -