In Wikipedia it is mentioned that Arjuna killed most warriors, followed by Karna, followed by Ashwatthama. Below is the relevant quote.
After Arjuna and Karna, Ashwatthama killed most number of warriors in the Kurukshetra war.
However, there was no scripture reference is given in that Wikipedia page for this claim.
Is this true? Is this information really mentioned in Mahabharata about who killed most number of warriors?