RT Journal Article T1 Analytic Integrability of Some Examples of Degenerate Planar Vector Fields A1 Algaba Durán, Antonio A1 García García, Cristóbal A1 Giné, Jaume AB This paper is devoted to the classification of analytic integrable cases of two families of degenerate planar vector fields with a monodromic singular point at the origin. This study falls in the still open degenerate center problem. This classification can be done using the formal normal form theory and knowing a suitable normal form of any differential systems associated to each family. AB This paper is devoted to the classification of analytic integrable cases of two families of degenerate planar vector fields with a monodromic singular point at the origin. Thisstudy falls in the still open degenerate center problem. This classification can be done using the formal normal form theory and knowing a suitable normal form of any differentialsystems associated to each family. PB Springer SN 0167-8019 SN 1572-9036 (electrónico) YR 2016 FD 2016 LK http://hdl.handle.net/10272/20906 UL http://hdl.handle.net/10272/20906 LA eng NO Algaba, A., García, C., & Giné, J. (2014). Analytic Integrability of Some Examples of Degenerate Planar Vector Fields. In Acta Applicandae Mathematicae (Vol. 141, Issue 1, pp. 1–15). Springer Science and Business Media LLC. https://doi.org/10.1007/s10440-014-0001-2 NO The authors are grateful to the referees for their valuable remarks which helped toimprove the manuscript. The first and second authors are supported by a MINECO/FEDER grant numberMTM2010-20907-C02-02 and by the Consejería de Educación y Ciencia de la Junta de Andalucía (projectsP12-FQM-1658; TIC-130 and FQM-276). The third author is partially supported by a MINECO/FEDERgrant number MTM2011-22877 and by an AGAUR (Generalitat de Catalunya) grant number 2014SGR 1204. DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026