DA SILVA, PRISCILA LEAL; FREIRE, IGOR LEITE; SANTOS SAMPAIO, JULIO CESAR. A family of wave equations with some remarkable properties.** PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SC**, v. 474, n. 2210, FEB 2018. Web of Science Citations: 0. (11/23538-0, 14/05024-8, 12/22725-4)

DA SILVA, PRISCILA LEAL; FREIRE, IGOR LEITE. Symmetry analysis of a class of autonomous even-order ordinary differential equations.** IMA JOURNAL OF APPLIED MATHEMATICS**, v. 80, n. 6, p. 1739-1758, DEC 2015. Web of Science Citations: 3. (12/22725-4, 14/05024-8)

FREIRE, IGOR LEITE; DA SILVA, PRISCILA LEAL; TORRISI, MARIANO. Lie and Noether symmetries for a class of fourth-order Emden-Fowler equations.** Journal of Physics A-Mathematical and Theoretical**, v. 46, n. 24, JUN 21 2013. Web of Science Citations: 7. (10/10259-3, 11/20072-0, 11/19089-6)

FREIRE, IGOR LEITE; TORRISI, MARIANO. Symmetry methods in mathematical modeling of Aedes aegypti dispersal dynamics.** Nonlinear Analysis: Real World Applications**, v. 14, n. 3, p. 1300-1307, JUN 2013. Web of Science Citations: 11. (11/20072-0, 11/19089-6)

ANCO, STEPHEN C.; DA SILVA, PRISCILA LEAL; FREIRE, IGOR LEITE. A family of wave-breaking equations generalizing the Camassa-Holm and Novikov equations.** Journal of Mathematical Physics**, v. 56, n. 9, SEP 2015. Web of Science Citations: 10. (12/22725-4, 14/05024-8)

SANTOS SAMPAIO, JULIO CESAR; FREIRE, IGOR LEITE. Nonlinear Self-Adjoint Classification of a Burgers-KdV Family of Equations.** Abstract and Applied Analysis**, 2014. Web of Science Citations: 1. (11/23538-0, 11/19089-6)

BOZHKOV, YURI; FREIRE, IGOR LEITE; IBRAGIMOV, NAIL H.. Group analysis of the Novikov equation.** COMPUTATIONAL & APPLIED MATHEMATICS**, v. 33, n. 1, p. 193-202, APR 2014. Web of Science Citations: 10. (11/19089-6)

FREIRE, IGOR LEITE; TORRISI, MARIANO. Similarity solutions for systems arising from an Aedes aegypti model.** COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION**, v. 19, n. 4, p. 872-879, APR 2014. Web of Science Citations: 5. (11/20072-0, 11/19089-6)

FREIRE, IGOR LEITE; SANTOS SAMPAIO, JULIO CESAR. On the nonlinear self-adjointness and local conservation laws for a class of evolution equations unifying many models.** COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION**, v. 19, n. 2, SI, p. 350-360, FEB 2014. Web of Science Citations: 17. (11/23538-0, 11/19089-6)

DIMAS, STYLIANOS; FREIRE, IGOR LEITE. Study of a fifth order PDE using symmetries.** Applied Mathematics Letters**, v. 69, p. 121-125, JUL 2017. Web of Science Citations: 1. (14/05024-8)

SAMPAIO, JULIO CESAR SANTOS; FREIRE, IGOR LEITE. SYMMETRIES AND SOLUTIONS OF A THIRD ORDER EQUATION.** DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS**, n. SI, p. 981-989, 2015. Web of Science Citations: 0. (12/22725-4, 14/05024-8)

FREIRE, IGOR LEITE; TITO, RODRIGO DA SILVA. A Novikov equation describing pseudo-spherical surfaces, its pseudo-potentials, and local isometric immersions.** STUDIES IN APPLIED MATHEMATICS**, OCT 2021. Web of Science Citations: 0. (20/02055-0)

BOZHKOV, YURI; FREIRE, IGOR LEITE. On the Lane-Emden system in dimension one.** Applied Mathematics and Computation**, v. 218, n. 21, p. 10762-10766, JUL 1 2012. Web of Science Citations: 8. (11/19089-6)

FREIRE, IGOR LEITE. New classes of nonlinearly self-adjoint evolution equations of third- and fifth-order.** COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION**, v. 18, n. 3, p. 493-499, MAR 2013. Web of Science Citations: 22. (11/19089-6)

TRACINA, RITA; LEITE FREIRE, IGOR; TORRISI, MARIANO. Nonlinear self-adjointness of a class of third order nonlinear dispersive equations.** COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION**, v. 32, p. 225-233, MAR 2016. Web of Science Citations: 9. (11/19089-6, 14/05024-8)

NAZ, REHANA; FREIRE, IGOR LEITE; NAEEM, IMRAN. Comparison of Different Approaches to Construct First Integrals for Ordinary Differential Equations.** Abstract and Applied Analysis**, 2014. Web of Science Citations: 11. (11/19089-6)

FREIRE, IGOR LEITE; TORRISI, MARIANO. Weak Equivalence Transformations for a Class of Models in Biomathematics.** Abstract and Applied Analysis**, 2014. Web of Science Citations: 4. (11/20072-0, 11/19089-6)

DA SILVA, PRISCILA LEAL; FREIRE, IGOR LEITE. AN EQUATION UNIFYING BOTH CAMASSA-HOLM AND NOVIKOV EQUATIONS.** DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS**, n. SI, p. 304-311, 2015. Web of Science Citations: 0. (12/22725-4, 14/05024-8)

BACANI, FELIPO; DIMAS, STYLIANOS; FREIRE, IGOR LEITE; MAIDANA, NORBERTO ANIBAL; TORRISI, MARIANO. Mathematical modelling for the transmission of dengue: Symmetry and travelling wave analysis.** NONLINEAR ANALYSIS-REAL WORLD APPLICATIONS**, v. 41, p. 269-287, JUN 2018. Web of Science Citations: 2. (14/05024-8)

MOGOROSI, TSHEPO E.; FREIRE, IGOR L.; MUATJETJEJA, BEN; KHALIQUE, CHAUDRY MASOOD. Group analysis of a hyperbolic Lane-Emden system.** Applied Mathematics and Computation**, v. 292, p. 156-164, JAN 1 2017. Web of Science Citations: 4. (14/05024-8)

FREIRE, IGOR LEITE. Persistence properties of a Camassa-Holm type equation with (n+1)-order non-linearities.** Journal of Mathematical Physics**, v. 63, n. 1, JAN 1 2022. Web of Science Citations: 0.