Einstein–Dirac–Maxwell wormholes: ansatz, construction and properties of symmetric solutions Jose Luis Blázquez-Salcedo, Christian Knoll and E. Radu Eur. Phys. J. C, 82 6 (2022) 533 Published online: 15 June 2022 DOI: 10.1140/epjc/s10052-022-10488-6