Extracting topological information from momentum space propagators Fabrizio Canfora, David Dudal, Alex Giacomini, Igor F. Justo, Pablo Pais and Luigi Rosa Eur. Phys. J. C, 79 10 (2019) 837 Published online: 10 October 2019 DOI: 10.1140/epjc/s10052-019-7322-2