On April 7 2011 Ukrainian Parliament voted in a new law on the prevention and counteraction of corruption. The voting occurred in a half empty parliament.
From April 6 the official website of Ukrainian Parliament publishes a list of MPs who have signed in on the days parliamentary sittings are held. This site also publishes the results of votes cast by MPs using electronic key cards inserted into readers.
The Anti-Corruption Law was approved by 277 electronic votes deputies, even though only 158 of these MPs had signed in and registered their presence that day. There are 450 MPs in total in the Verkhovna Rada.
Source [in English] here
Proxy voting in parliament is strictly anti-consitutional.