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Leonid Khachiyan was born in 1952.
Leonid Khachiyan died in 2005.
Melikset Khachiyan was born in 1970.
Leonid Kraynenkov's birth name is Krajnenkov, Leonid Sergeyevich.
Leonid Lyubashevsky's birth name is Lyubashevsky, Leonid Solomonovich.