Bozhkov, Yu. D.; Freire, I. L. Divergence symmetries of critical Kohn-Laplace equations on Heisenberg groups. (English. Russian original) Zbl 1233.35077 Differ. Equ. 47, No. 8, 1210-1214 (2011); translation from Differ. Uravn. 47, No. 8, 1196-1200 (2011). Reviewer: Alexander Odesskii (Thorold) MSC: 35J15 58J05 35R03 PDFBibTeX XMLCite \textit{Yu. D. Bozhkov} and \textit{I. L. Freire}, Differ. Equ. 47, No. 8, 1210--1214 (2011; Zbl 1233.35077); translation from Differ. Uravn. 47, No. 8, 1196--1200 (2011) Full Text: DOI arXiv
Freire, Igor Leite; Faleiros, Antonio Cândido Lie point symmetries and some group invariant solutions of the quasilinear equation involving the infinity Laplacian. (English) Zbl 1430.35008 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 11, 3478-3486 (2011). MSC: 35A30 35J60 58J70 PDFBibTeX XMLCite \textit{I. L. Freire} and \textit{A. C. Faleiros}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 11, 3478--3486 (2011; Zbl 1430.35008) Full Text: DOI
Bozhkov, Yuri; Freire, Igor Leite Special conformal groups of a Riemannian manifold and Lie point symmetries of the nonlinear Poisson equation. (English) Zbl 1194.35145 J. Differ. Equations 249, No. 4, 872-913 (2010). MSC: 35J60 35J20 35A30 35B06 58J70 PDFBibTeX XMLCite \textit{Y. Bozhkov} and \textit{I. L. Freire}, J. Differ. Equations 249, No. 4, 872--913 (2010; Zbl 1194.35145) Full Text: DOI arXiv
Freire, Igor Leite On the paper “symmetry analysis of wave equation on sphere” by H. Azad and M. T. Mustafa. (English) Zbl 1191.35026 J. Math. Anal. Appl. 367, No. 2, 716-720 (2010). MSC: 35B06 58J70 58J45 PDFBibTeX XMLCite \textit{I. L. Freire}, J. Math. Anal. Appl. 367, No. 2, 716--720 (2010; Zbl 1191.35026) Full Text: DOI arXiv
Bozhkov, Yuri Dimitrov; Freire, Igor Leite Conservations laws for critical Kohn-Laplace equations on the Heisenberg group. (English) Zbl 1161.35001 J. Nonlinear Math. Phys. 15, No. 1, 35-47 (2008). Reviewer: Marco Biroli (Milano) MSC: 35H20 PDFBibTeX XMLCite \textit{Y. D. Bozhkov} and \textit{I. L. Freire}, J. Nonlinear Math. Phys. 15, No. 1, 35--47 (2008; Zbl 1161.35001) Full Text: DOI arXiv Link