Braga LH, Pippi Salle JL, Dave S, Bagli DJ, Lorenzo AJ, Khoury AE (2007), "Outcome analysis of severe chordee correction using tunica vaginalis as a flap in boys with proximal hypospadias", J. Urol., 178 (4 Pt 2): 1693–7, discussion 1697, doi:10.1016/j.juro.2007.03.166, PMID17707021.
Braga LH, Pippi Salle JL, Dave S, Bagli DJ, Lorenzo AJ, Khoury AE (2007), "Outcome analysis of severe chordee correction using tunica vaginalis as a flap in boys with proximal hypospadias", J. Urol., 178 (4 Pt 2): 1693–7, discussion 1697, doi:10.1016/j.juro.2007.03.166, PMID17707021.