• Keyless signature infrastructure and PKI : hash-tree signatures in pre- and post-quantum worldBuldas, Ahto; Laanoja, Risto; Truu, AhtoInternational journal of services technology and management2017 / p. 117-130 : ill https://doi.org/10.1504/IJSTM.2017.10002708 https://www.scopus.com/sourceid/19699 https://www.scopus.com/record/display.uri?eid=2-s2.0-85011279377&origin=inward&txGid=004ffeb20d7c072b548860fef26b1102