Resumen: The main purpose of this paper is to explicitly calculate the Jordan blocks of size 2 for the eigenvalue of a Yomdin–Lê surface singularity, in terms of the combinatorial data of its tangent cone. Our method relies on the use of a generalization of Steenbrink's spectral sequence and a certain partial toric resolution of this family of singularities. Both the spectral sequence and the partial resolution have already been developed by the author in previous works. Idioma: Inglés DOI: 10.1016/j.crma.2014.11.006 Año: 2015 Publicado en: COMPTES RENDUS MATHEMATIQUE 353, 2 (2015), 161-165 ISSN: 1631-073X Factor impacto JCR: 0.446 (2015) Categ. JCR: MATHEMATICS rank: 235 / 311 = 0.756 (2015) - Q4 - T3 Factor impacto SCIMAGO: 1.108 - Mathematics (miscellaneous) (Q1)