Roberto Aliaga Sanchez is a biologist and a children's book author. He won the Lazarillo prize in 2008 with El príncipe de los enredos, and his book Cactus del desierto was chosen by the prestigious Youth Library in Munich to join the White Ravens 2009 list. His books have been translated into ten languages. Miguel Cerro Rico is the illustrator of more than 10 children's books, some of which have won various awards.