Crowdsourcing-Based Fingerprinting for Indoor Location in Multi-Storey Buildings Santos, Ricardo ; Leonardo, Ricardo ; Barandas, Marilia ; Moreira, Dinis ; Rocha, Tiago ; Alves, Pedro ; Oliveira, Joao P. ; Gamboa, Hugo Abstract Publication: IEEE Access Pub Date: 2021 DOI: 10.1109/ACCESS.2021.3060123 Bibcode: 2021IEEEA...931143S