Several former riders who race with Armstrong have reportedly been subpoenaed. When faced with questions about these reports at the Tour de France, Armstrong said he had not been subpoenaed or contacted by Novitzky himself.
Landis, who was stripped of his 2006 Tour title for doping, long denied using drugs until announcing in April that he had doped - and alleging Armstrong had too. The claim came as Armstrong was riding in the Tour of California.
Armstrong, who denies the claims, blamed Landis for trying to clear his conscience and attempting "to incriminate a half-dozen other people".
"That doesn't add up. That's just somebody who's trying to ruin the lives of others," he said.
He insisted the revelations didn't ruin his last Tour. "I wouldn't say that it's ruined. In 10 years, when I look back on the 2010 Tour, it won't be the memory that I have. Obviously, I won't have a yellow jersey to remember. I'll remember the team, digging deep to win the team general classification. It's significant for us and the sponsor.
"I'll remember having my son here for a week at the Tour," he said of 10-year-old Luke. "I'll remember the bad luck, certainly, the crashes. But that won't be the thing that I'll take away."
Armstrong, the winner of seven Tour titles, finished an impressive third last year and came within one second of the yellow jersey.
This year, he was but a mere 23rd, nearly 40 minutes behind winner Alberto Contador, and his best single showing was arguably in the prologue in Rotterdam, where he was placed fourth.
From then, it was all downhill.
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