 Nevertheless, the arrival of foreign publications, mainly from Mexico, with better paper and ink quality and lower prices, started a financial crisis in the Argentine comic industry, and several publishers, including Oesterheld's "Ediciones Frontera", had to close or be sold, which forced several artists and writers to go abroad.After the 1966 coup d'état, the comics industry suffered from both some censorship and from recurring economic downturns.The 1968 biographic graphic novel of Che Guevara by Oesterheld and Breccia was removed from circulation by the government and the originals destroyed.