1. Laryngotracheoesophageal cleft: the anterior approach;Bell;Ann. Otol. Rhinol. Laryngol.,1977
2. Laryngotracheoesophageal cleft, the embryologic implications: review of the literature;Blumberg;Surgery,1965
3. C.F. Richter, Medico de Infanticido in Artis Obstetriciae, Thesis, Leipzig, 1972.
4. Inhibited separation of larynx and the upper part of trachea from oesophagus in a newborn; report of a case successfully operated upon;Pettersson;Acta. Chir. Scand.,1955
5. Laryngeal and laryngotracheoesophageal clefts: role of early surgical repair;Myer;Ann. Otol. Rhinol. Laryngol.,1990