%0 Journal Article %A Andrea Cavagna %A Antonio Culla %A Luca Di Carlo %A Irene Giardina %A Tomas S. Grigera %T Low-temperature marginal ferromagnetism explains anomalous scale-free correlations in natural flocks %J Comptes Rendus. Physique %D 2019 %P 319-328 %V 20 %N 4 %I Elsevier %R 10.1016/j.crhy.2019.05.008 %G en %F CRPHYS_2019__20_4_319_0