Revisiting a family of wormholes: geometry, matter, scalar quasinormal modes and echoes Poulami Dutta Roy, S. Aneesh and Sayan Kar Eur. Phys. J. C, 80 9 (2020) 850 Published online: 14 September 2020 DOI: 10.1140/epjc/s10052-020-8409-5