New linking schemes for digital time-stamping
Buldas, Ahto
;
Laud, Peeter
Proceedings of the CISC'98, Seoul, Korea
1998
/
p. 112-123
https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=d3a005fb546ff78abc6ee453af4ee91aa6267c50