2007

• Lanna, E., Rossi, A.L., Cavalcanti, F.F., Hajdu, E. & Klautau, M. 2007. Calcareous sponges from São Paulo State, Brazil (Porifera: Calcarea: Calcinea) with the description of two new species. Journal of the Marine Biological Association of the United Kingdom 87(6): 1553–1561. DOI: 10.1017/S0025315407056871 Reference page. 

2013

• Redmond, N.E., Morrow, C.C., Thacker, R.W., Díaz, M.C., Boury-Esnault, N., Cárdenas, P., Hajdu, E., Lôbo-Hajdu, G., Picton, B.E., Pomponi, S.A., Kayal, E. & Collins, A.G. 2013. Phylogeny and Systematics of Demospongiae in Light of New Small-Subunit Ribosomal DNA (18S) Sequences. Integrative and Comparative Biology 53(3): 388–415. DOI: 10.1093/icb/ict078 Reference page. 

2015

• Hajdu, E., Hooker, Y. & Willenz, P. 2015: New Hamacantha from Peru and resurrection of Zygherpe as subgenus (Demospongiae, Poecilosclerida, Hamacanthidae). Zootaxa 3926(1): 87–99. DOI: 10.11646/zootaxa.3926.1.3 Reference page. 

• Leite, D.M.B., Fonseca, C.A., Leal, C.V. & Hajdu, E. 2015. Two new species of Timea from the Southwest Atlantic (Timeidae, Demospongiae, Porifera). Zootaxa 4034(1): 161–181. DOI: 10.11646/zootaxa.4034.1.8 . Preview (PDF). Reference page. 

• Pinheiro, U., Calheira, L. & Hajdu, E. 2015. A new species of freshwater sponge, Heteromeyenia barlettai sp. nov. from an aquarium in São Paulo, Brazil (Spongillida: Spongillidae). Zootaxa 4034(2): 351–363. DOI: 10.11646/zootaxa.4034.2.7 . Preview (PDF) Reference page. 

2016

• Cavalcanti, T., Santos, G.G., Hajdu, E. & Pinheiro, U. 2016. A new shallow water species of Artemisina Vosmaer, 1885 (Microcionidae, Demospongiae; Porifera) from Northeastern Brazil. Zootaxa 4184(2): 386–390. DOI: 10.11646/zootaxa.4184.2.11 . Reference page. 

• Fernandez, J.C.C., Cárdenas, C.A., Bravo, A., Lôbo-Hajdu, G., Willenz, P. & Hajdu, E. 2016. Lissodendoryx (Ectyodoryx) Lundbeck, 1909 (Coelosphaeridae, Poecilosclerida, Demospongiae) from Southern Chile: new species and a discussion of morphologic characters in the subgenus. Zootaxa 4092(1): 69–89. DOI: 10.11646/zootaxa.4092.1.4 .Reference page. 

• Santos, G.G., Pinheiro, U., Hajdu, E. & van Soest, R. 2016. New Genus and species of Heteroxyidae from Brazil (Axinellida: Demospongiae: Porifera), with a revised identification key for the family. Zootaxa 4158(1): 105–116. DOI: 10.11646/zootaxa.4158.1.6 Reference page. 

2018

• Cóndor-Luján, B., Louzada, T., Hajdu, E. & Klautau, M. 2018. Morphological and molecular taxonomy of calcareous sponges (Porifera: Calcarea) from Curaçao, Caribbean Sea. Zoological Journal of the Linnean Society 183(3): 459–525. DOI: 10.1093/zoolinnean/zlx082 Reference page.