History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
When it did not surrender, he dismissed his land-forces, and having himself sailed to Leucas, and made a descent upon Nericus, was cut off on his return, and some part of his army with him, by the people of the neighbourhood who had come to the rescue, and some few guard-troops.
The Athenians, after sailing away, subsequently recovered their dead from the Leucadians by treaty.
Now the ambassadors of the Mytilenaeans sent out in the first ship, being told by the Lacedaemonians to come to Olympia, in order that the rest of the confederates also might hear and consult upon their case, accordingly went thither. It was the Olympiad at which Dorieus the Rhodian gained his second victory.