That article also mentions a paper "Improving Round-Trip Time Estimates in Reliable Transport Protocols" from 1995:<p><a href="http://ccr.sigcomm.org/archive/1995/jan95/ccr-9501-partridge87.pdf" rel="nofollow">http://ccr.sigcomm.org/archive/1995/jan95/ccr-9501-partridge...</a>