STOCKHOLM, July 21 (Reuters) - Nordic telecom operator Telia on Wednesday reported quarterly core earnings marginally ahead of market expectations and maintained its full-year outlook as its Nordic markets gradually recover from the effects of the pandemic.

The company's second-quarter adjusted EBITDA (earnings before interest, tax, depreciation and amortisation) fell 0.1% to 7.73 billion Swedish crowns from a year earlier, just beating the mean forecast of 7.71 billion crowns, according to Refinitiv estimates. (Reporting by Supantha Mukherjee in Stockholm; editing by Niklas Pollard)