%0 Journal Article %A N.H. Ibragimov %A R.N. Ibragimov %T Bifurcation of Nonlinear Conservation Laws from the Classical Energy Conservation Law for Internal Gravity Waves in Cylindrical Wave Field %J Mathematical modelling of natural phenomena %D 2013 %P 119-130 %V 8 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20138508/ %R 10.1051/mmnp/20138508 %G en %F MMNP_2013_8_5_a7