Lotus says the pressure is now on Ferrari and Mercedes in the fight to be runner-up to Red Bull in the 2013 Formula 1 season.

The Enstone-based outfit has scored 58 points in the last two grands prix, which has allowed it to close a 68-point deficit to second-placed Ferrari to just 33 points.

That strong form has left Lotus chief Eric Boullier bullish about the chances of further gains.

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