(1983) .

𝘌𝘯 𝘶𝘯𝘢 𝘶𝘯𝘪𝘷𝘦𝘳𝘴𝘪𝘥𝘢𝘥 𝘢𝘮𝘦𝘳𝘪𝘤𝘢𝘯𝘢, 𝘴𝘪𝘦𝘵𝘦 𝘮𝘶𝘤𝘩𝘢𝘤𝘩𝘢𝘴 𝘶𝘭𝘵𝘪𝘮𝘢𝘯 𝘭𝘰𝘴 𝘱𝘳𝘦𝘱𝘢𝘳𝘢𝘵𝘪𝘷𝘰𝘴 𝘥𝘦 𝘴𝘶 𝘧𝘪𝘦𝘴𝘵𝘢 𝘥𝘦 𝘨𝘳𝘢𝘥𝘶𝘢𝘤𝘪ó𝘯. 𝘗𝘦𝘳𝘰 𝘭𝘢 𝘥𝘶𝘦ñ𝘢 𝘥𝘦 𝘭𝘢 𝘤𝘢𝘴𝘢 𝘱𝘳𝘰𝘩𝘪𝘣𝘦 𝘵𝘦𝘳𝘮𝘪𝘯𝘢𝘯𝘵𝘦𝘮𝘦𝘯𝘵𝘦 𝘤𝘶𝘢𝘭𝘲𝘶𝘪𝘦𝘳 𝘵𝘪𝘱𝘰 𝘥𝘦 𝘤𝘦𝘭𝘦𝘣𝘳𝘢𝘤𝘪ó𝘯, 𝘺 𝘤𝘰𝘯 𝘣𝘢𝘴𝘵𝘢𝘯𝘵𝘦 𝘣𝘳𝘶𝘴𝘲𝘶𝘦𝘥𝘢𝘥 𝘭𝘦𝘴 𝘱𝘪𝘥𝘦 𝘲𝘶𝘦 𝘴𝘦 𝘮𝘢𝘳𝘤𝘩𝘦𝘯 𝘴𝘪𝘯 𝘧𝘢𝘭𝘵𝘢 𝘢𝘭 𝘥í𝘢 𝘴𝘪𝘨𝘶𝘪𝘦𝘯𝘵𝘦. 𝘓𝘢𝘴 𝘤𝘩𝘪𝘤𝘢𝘴 𝘪𝘨𝘯𝘰𝘳𝘢𝘯 𝘭𝘢𝘴 𝘢𝘥𝘷𝘦𝘳𝘵𝘦𝘯𝘤𝘪𝘢𝘴 𝘥𝘦 𝘭𝘢 𝘮𝘶𝘫𝘦𝘳 𝘺 𝘴𝘪𝘨𝘶𝘦𝘯 𝘢𝘥𝘦𝘭𝘢𝘯𝘵𝘦 𝘤𝘰𝘯 𝘭𝘰𝘴 𝘱𝘳𝘦𝘱𝘢𝘳𝘢𝘵𝘪𝘷𝘰𝘴, 𝘥𝘪𝘴𝘱𝘶𝘦𝘴𝘵𝘢𝘴 𝘪𝘯𝘤𝘭𝘶𝘴𝘰 𝘢 𝘨𝘢𝘴𝘵𝘢𝘳𝘭𝘦 𝘶𝘯𝘢 𝘣𝘳𝘰𝘮𝘢 𝘤𝘰𝘮𝘰 𝘷𝘦𝘯𝘨𝘢𝘯𝘻𝘢 𝘱𝘰𝘳 𝘭𝘰𝘴 𝘮𝘢𝘭𝘰𝘴 𝘳𝘢𝘵𝘰𝘴 𝘲𝘶𝘦 𝘭𝘦𝘴 𝘩𝘢 𝘩𝘦𝘤𝘩𝘰 𝘱𝘢𝘴𝘢𝘳. 𝘊𝘶𝘢𝘯𝘥𝘰 𝘭𝘢 𝘮𝘶𝘫𝘦𝘳, 𝘮𝘶𝘺 𝘦𝘯𝘧𝘢𝘥𝘢𝘥𝘢, 𝘦𝘮𝘱𝘪𝘦𝘻𝘢 𝘢 𝘨𝘳𝘪𝘵𝘢𝘳 𝘺 𝘢 𝘢𝘮𝘦𝘯𝘢𝘻𝘢𝘳𝘭𝘢𝘴 𝘤𝘰𝘯 𝘴𝘶 𝘣𝘢𝘴𝘵ó𝘯, 𝘶𝘯𝘢 𝘥𝘦 𝘭𝘢𝘴 𝘤𝘩𝘪𝘤𝘢𝘴 𝘴𝘢𝘤𝘢 𝘶𝘯𝘢 𝘱𝘪𝘴𝘵𝘰𝘭𝘢 𝘺 𝘭𝘢 𝘣𝘳𝘰𝘮𝘢 𝘢𝘤𝘢𝘣𝘢 𝘱𝘰𝘳 𝘵𝘦𝘯𝘦𝘳 𝘶𝘯 𝘵𝘳á𝘨𝘪𝘤𝘰 𝘥𝘦𝘴𝘦𝘯𝘭𝘢𝘤𝘦 𝘲𝘶𝘦 𝘳𝘦𝘱𝘳𝘦𝘴𝘦𝘯𝘵𝘢𝘳á 𝘦𝘭 𝘱𝘳𝘪𝘯𝘤𝘪𝘱𝘪𝘰 𝘥𝘦 𝘶𝘯𝘢 𝘢𝘯𝘨𝘶𝘴𝘵𝘪𝘰𝘴𝘢 𝘱𝘦𝘴𝘢𝘥𝘪𝘭𝘭𝘢.