Zeta - who hail from a town with a population of about 3,000 - beat Lithuanian side FBK Kaunas 5-4 on aggregate in the previous round and Smith believes their triumph proved they can handle the pressure of European football.
"They look a tidy football team," the Rangers boss said. "Against Kaunas they tried to play and pass and have come through difficult spells and not been affected by it. You hear about teams coming to a big stadium and worrying, but lads want to play in this environment."
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