Díez-Echavarría, Luisa, Gerardo Gutiérrez-Gutiérrez, and Diana Carolina Ríos-Echeverri. 2023. “Competitive Dynamics Between Physical and Virtual Markets in Multiplex Networks”. Periodica Polytechnica Social and Management Sciences 31 (1):63-73. https://doi.org/10.3311/PPso.17935.