The term "Golden Age of Porn", or "porno chic", refers to a 15-year period (1969–1984) in commercial American pornography, in which sexually explicit films experienced positive attention from mainstream cinemas, movie critics, and the general public. This American period, which subsequently spread internationally, and that began before the legalization of pornography in Denmark on July 1, 1969, started on June 12, 1969, with the theatrical release of the film Blue Movie directed by Andy Warhol, and, somewhat later, with the release of the 1970 film Mona the Virgin Nymph produced by Bill Osco. These films were the first adult erotic films depicting explicit sex to receive wide theatrical release in the United States. Both influenced the making of films such as 1972's Deep Throat starring Linda Lovelace and directed by Gerard Damiano, Behind the Green Door starring Marilyn Chambers and directed by the Mitchell brothers, 1973's The Devil in Miss Jones also by Damiano, and 1976's The Opening of Misty Beethoven by Radley Metzger, the "crown jewel" of the Golden Age, according to award-winning author Toni Bentley. According to Andy Warhol, his Blue Movie film was a major influence in the making of Last Tango in Paris, an internationally controversial erotic drama film, starring Marlon Brando, and released in 1972, three years after Blue Movie was shown in theaters.