@Book{313385971,
author="Cevedo Sosa, Sergio",
title="noche de un d{\'{\i}}a dif{\'{\i}}cil",
year="1989",
publisher="Uni{\'o}n de Escritores y Artistas de Cuba",
address="Ciudad de la Habana",
note="Sergio Cevedo Sosa",
language="Spanish"
}