Pietrzak, Krzysztof Z, Iosif Salem, Stefan Schmid, and Michelle X Yeo. “LightPIR: Privacy-Preserving Route Discovery for Payment Channel Networks.”https://doi.org/10.23919/IFIPNetworking52078.2021.9472205__IEEE, 2021.https://doi.org/10.23919/IFIPNetworking52078.2021.9472205 .