Hi there, i have listen that Bank Wire, International Bank Transfers can be charged back, but some people says chargeback is not possible. What is the truth?

How can we ensure that bankwire transfer wont be reversed?

Wikipedia: "Chargeback is unlikely, although wires can be recalled"

exchangezone.com: "our system will hold Liberty Reserve funds for 7 days after Bank Wire funds were transferred from one account to another to make sure the transfer was not fraudulent"