On June 12, 2005, an improvised bomb equivalent to three kilograms (6.6 pounds) of TNT was set off 153 kilometers (95 miles) south of Moscow as a train en route from Grozny, the capital of the North Caucasus republic of Chechnya, to Moscow passed by.
Forty-two people required medical attention, and five of them, including a child, were hospitalized.
The defendants - Vladimir Vlasov, a businessman, and Mikhail Klevachev, a construction company employee - were charged with terrorism and attempting to kill two or more people for reasons of race or religious hatred. They have not admitted their guilt.
Last month, judges decided that the investigation had proved the defendants' involvement in the crimes they were charged with, and 10 of the 12 jury members hearing the case voted for a guilty verdict.
The defendants were found guilty on all charges, including terrorism, but the judges decided they deserve leniency.
On Monday, Vlasov was given 18 years in prison and Klevachev 19 years, whereas the prosecution had demanded 20 and 22 years, respectively.
In December 2006, a Moscow Region court dismissed the jury in the case of the train-derailing blast after it reached a not guilty verdict.
"Nine of the jury voted for acquittal, and three for the guilty verdict," jurywoman Alexandra Salamatina said then.
But the court dismissed the jury after the verdict was read, upholding the prosecutor's contention that it was pressured.
The prosecutor said some on the jury spoke with lawyers before the final court session, but jury members said in turn that prosecutors tried to find fault with them as a reason for their dismissal.
Salamatina said: "The court has already made a decision that the defendants are guilty, and if the next jury acquits them, they will be dismissed, too."
She said prosecutors' arguments were so vague that it was not necessary to be a lawyer to understand that the case had been fabricated.
After the acquittal, the Moscow Region Court dismissed the jury and ordered a new trial.
