Felipe Massa says he is determined to fight back to form after admitting that his current run of poor results cannot go on.

The Brazilian has failed to score a point in the opening two races of the 2012 season and hasn't even finished on the podium since finishing third in the inaugural Korean Grand Prix back in October 2010.

The lack of results has increased the pressure on the Ferrari driver no end, with rumour and speculation that he will be replaced when his current contract runs out at the end of the season.

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Massa however said he is determined to re-find his form and repay the faith that has been shown in him by his team.

"I was at Maranello last week, working on the simulator to be as well prepared as possible for the next two races, studying every minute detail relating to what did not work properly in Melbourne and Sepang, to get it right and be ready for China and Bahrain," he said. "It's a tricky time for me and it cannot go on and I really don't want it to that's for sure. I know there is plenty of criticism of me from the outside, but I'm used to that, as it's certainly not the first time it has happened.

"I feel the team has faith in me and that's what matters. I am well aware, having been through it many times in the past, that it takes very little for a situation to swing from negative to positive."

Massa will hope he can return to form in Shanghai this weekend on a circuit where he has twice finished on the podium, although he insisted that top-end speed could work against Ferrari.

"I've been on the Shanghai podium twice: on the third step in 2007 and on the second in 2008," he said. "It's a track I like: there are many different types of corner and a very long straight where even before the days of DRS, you could overtake. Sure, this year, we will suffer a bit, especially in terms of top speed, therefore it won't be easy for us. However, it's not definite that whoever is fastest wins in the end..."