The location of the white boccia ball (the target) in the national interleague chess and boccia championship in Cartagena de Indias, Colombia. AFDH [Internet]. 2013 Oct. 31 [cited 2025 Oct. 15];5(1):48-5. Available from: https://ojs.unipamplona.edu.co/index.php/afdh/article/view/1687