Sauber boss Monisha Kaltenborn has admitted the so-called 'Russian rescue deal' has not solved all of the Swiss team's problems.
Although it emerged recently that Russian rubles have started to flow, Swiss business newspaper Handelszeitung reported that in fact more unpaid suppliers have filed prosecutions against Sauber with the national debt register.
"In the Handelszeitung there were things reported that are not true," boss Kaltenborn told Speed Week at Monza.
"We have already said that we are in a challenging situation.
"Through this (Russian) partnership, there is an upward trend, but it takes time," she explained.
"It has been a noticeable step for us and...
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