Zennaro, F., et al. “SPIGELIAN HERNIAS-CLINICAL-ANATOMICAL CONSIDERATIONS AND REPORT OF 5 CLINICAL CASES”. Annali Italiani Di Chirurgia, vol. 74, no. 2, Mar. 2003, pp. 165-8, https://annaliitalianidichirurgia.it/index.php/aic/article/view/1815.