Riccio, Jennifer Alcaine, Alejandro Rocher, Sara Martinez-Mateu, Laura Saiz, Javier Invers-Rubio, Eric Guillem, Maria S. Martínez, Juan Pablo Laguna, Pablo Atrial fibrosis identification with unipolar electrogram eigenvalue distribution analysis in multi-electrode arrays Med. biol. eng. comput. 10.1007/s11517-022-02648-3 2022 2022