The FIA has published a 2015 Formula 1 entry list featuring 11 teams as work continues to see Caterham and Marussia return to the championship.

The future of both teams remains in strong doubt, with the duo set to miss their second consecutive races this weekend at Interlagos.

Administrators for Caterham last week proclaimed a 14 day deadline to find a buyer for the Leafield-based squad which, if not met, would see the team wound up.

Administrator Finbarr O’Connell says that lodging an entry for 2015 was vital to any chance of a sale.

“With a team having an entry in the championship it makes them a far more viable proposition for us to do a deal. It’s absolutely essential,” he told the Associated Press.

“We’ve explained to the FIA and FOM (Formula One Management) we are looking for a new owner, but the paperwork for the entry has been done.

“We’re hoping the new owner will then pick up things like the fees and finalise the 2015 design.

“I’m hoping when the sport is in Abu Dhabi we will have finalised a deal before then, or at that point,” he added.

“I’m very, very hopeful the team will be in Abu Dhabi. We are making arrangements to go to Abu Dhabi as we speak.”

Marussia has meanwhile been entered under its original name, Manor F1 Team, which quickly made way to sponsor Virgin for its debut season in 2010.

The team, which is also in the hands of administrators, is listed as “subject to confirmation” on the FIA entry.

Entry list: 2015 FIA Formula 1 World Championship

*Provisional list subject to confirmation by the FIA that the conditions of entry are respected