Newman CS, Krieg PA (February 1999). "The Xenopus bagpipe-related homeobox gene zampogna is expressed in the pharyngeal endoderm and the visceral musculature of the midgut". Development Genes and Evolution. 209 (2): 132–4. doi:10.1007/s004270050236. PMID10022957. S2CID13512639.
Newman CS, Krieg PA (February 1999). "The Xenopus bagpipe-related homeobox gene zampogna is expressed in the pharyngeal endoderm and the visceral musculature of the midgut". Development Genes and Evolution. 209 (2): 132–4. doi:10.1007/s004270050236. PMID10022957. S2CID13512639.
Newman CS, Krieg PA (February 1999). "The Xenopus bagpipe-related homeobox gene zampogna is expressed in the pharyngeal endoderm and the visceral musculature of the midgut". Development Genes and Evolution. 209 (2): 132–4. doi:10.1007/s004270050236. PMID10022957. S2CID13512639.