González-Gutiérrez, Rosa Blanca, Javier Santos-González, Amelia Gómez-Villar, Eduardo Alonso-Herrero, Alipio García-de Celis, Martín Cano, and José María Redondo-Vega. 2017. “Glaciokarst Landforms in the Siera De Los Grajos, Babia and Luna Natural Park (Cantabrian Mountains, NW Spain)”. Acta Carsologica 46 (2-3). Ljubljana, Slovenija. https://doi.org/10.3986/ac.v46i2-3.5001.