%0 Journal Article %T Exact solutions and conservation laws for Ibragimov-Shabat equation which describe pseudo-spherical surface %A S.M. Sayed %A A.M. Elkholy %A G.M. Gharib %J Computational and Applied Mathematics %D 2008 %I %X Travelling wave solution for Ibragimov-Shabat equation, is obtained by using an improved sine-cosine method and the Wu's elimination method. An infinite number of conserved quantities for the above equation are also obtained by solving a set of coupled Riccati equations. %K nonlinear evolution equations %K conservation laws %K pseudo-spherical surfaces %U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-03022008000300005