1991

• Young, P.S. 1991. The superfamily Coronuloidea Leach (Cirripedia, Balanomorpha) from the Brazilian coast, with redescription of Stomatolepas species. Crustaceana, 61(2): 190–212. JSTOR Reference page. 

1998

• Young, P. S. 1998. Cirripedia (Crustacea) from the "Campagne Bioazores" in the Azores region, including a generic revision of the Verrucidae. Zoosystema, 20(1): 32-91. Full article (PDF) Reference page. 

• Young, P.S. 1998. The Cirripedia (Crustacea) collected by the Fisheries Steamer Meteor in the Eastern Atlantic. Arquivos do Museu Nacional, Rio de Janeiro 58: 1–54. Full article (PDF) Reference page. 

1999

• Young, P.S. 1999: The Cirripedia (Crustacea) collected by the R. V. Marion Drufesne along the Vitoria-Trindade seamounts (Brazil). Zoosystema, 21(4): 607-624. Full article (PDF) Reference page. 

2000

• Young, P.S. 2000. Cirripedia Thoracica (Crustacea) collected during the "Campagne de La Calypso (1961-1962)" from the Atlantic shelf of South America. Zoosystema, 22(1): 85-100. Full article (PDF) Reference page. 

2001

• Young, P.S. 2001: Redescription of Scalpellopsis striatociliata Broch, 1922, with a Discussion on Its Phylogenetic Position and the Peduncular Plate Pattern in Scalpellids. Journal of crustacean biology 21(2): 456-468. JSTOR Reference page. 

• Young, P.S. 2001: Deep-sea Cirripedia Thoracica (Crustacea) from the northeastern Atlantic collected by French expeditions. Zoosystema 23(4): 707-758. Full article (PDF) Reference page. 

2002

• Young, P.S. 2002: Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d’Histoire naturelle, France, studied by Abel Gruvel. Zoosystema 24(2): 309-345. Full article (PDF) Reference page. 

• Young, P.S. 2002. A reassignment of Scillaelepas rhabdota Young, 1999 to Aurivillialepas rhabdota (Cirripedia, Thoracica). Arquivos do Museu Nacional, 60(2): 95–101. BHL Reference page. 

• Young, P.S. 2002. The Verrucidae (Crustacea, Cirripedia) from the Western coast of North America, with a revision on the genus Altiverruca. Arquivos do Museu Nacional, Rio de Janeiro, 60(1): 5-40. BHL Reference page. 

2003

• Young, P.S. 2003. Redescription of the calanticids (Cirripedia, Scalpellomorpha) described by Wilhelm Weltner. Zoosystematics and evolution, 79(1): 181–201. DOI: 10.1002/mmnz.20030790103 Readcube Reference page. 

• Young, P.S. 2003: On the validity of four little-known species of Verrucidae (Crustacea, Ciripedia) from Azores region. Boletim do Museu Nacional, Nova Série, Zoologia 507: 1-13. Full article (PDF) Reference page. 

2004

• Young, P.S. 2004. On the validity of little-known species of Scalpellidae (Crustacea, Cirripedia) collected by the "Campagnes Scientifiques du S.A.S Prince de Monaco" from North Atlantic. Arquivos do Museu Nacional, Rio de Janeiro, 62(1): 25–30. BHL Reference page.