(en) Tehseen Zafar, Fabrizio Frontalini, Hafiz Ur Rehman, Danish Khan, Zaheen Ullah, Hamad ur Rahim, Abiola Oyebamiji, Zahid Hussain, Shuguang Song, Muhammad Farhan, Mohamed S. Ahmed, Mabrouk Sami et Douaa Fathy, «Understanding the origin of Cambrian marine oncoids: A petrologic, geochemical, and isotopic perspective», Sedimentary Geology, vol.466, no106638, (DOI10.1016/j.sedgeo.2024.106638, Bibcode2024SedG..46606638Z, lire en ligne, consulté le )
Daniela Hägele, Reinhold Leinfelder, Jürke Grau, Ernst-Gerhard Burmeister et Ulrich Struck, «Oncoids from the river Alz (southern Germany): Tiny ecosystems in a phosphorus-limited environment», Palaeogeography, Palaeoclimatology, Palaeoecology, vol.237, nos2–4, , p.378–395 (DOI10.1016/j.palaeo.2005.12.016, Bibcode2006PPP...237..378H)
(en) Tehseen Zafar, Fabrizio Frontalini, Hafiz Ur Rehman, Danish Khan, Zaheen Ullah, Hamad ur Rahim, Abiola Oyebamiji, Zahid Hussain, Shuguang Song, Muhammad Farhan, Mohamed S. Ahmed, Mabrouk Sami et Douaa Fathy, «Understanding the origin of Cambrian marine oncoids: A petrologic, geochemical, and isotopic perspective», Sedimentary Geology, vol.466, no106638, (DOI10.1016/j.sedgeo.2024.106638, Bibcode2024SedG..46606638Z, lire en ligne, consulté le )
Daniela Hägele, Reinhold Leinfelder, Jürke Grau, Ernst-Gerhard Burmeister et Ulrich Struck, «Oncoids from the river Alz (southern Germany): Tiny ecosystems in a phosphorus-limited environment», Palaeogeography, Palaeoclimatology, Palaeoecology, vol.237, nos2–4, , p.378–395 (DOI10.1016/j.palaeo.2005.12.016, Bibcode2006PPP...237..378H)
(en) Tehseen Zafar, Fabrizio Frontalini, Hafiz Ur Rehman, Danish Khan, Zaheen Ullah, Hamad ur Rahim, Abiola Oyebamiji, Zahid Hussain, Shuguang Song, Muhammad Farhan, Mohamed S. Ahmed, Mabrouk Sami et Douaa Fathy, «Understanding the origin of Cambrian marine oncoids: A petrologic, geochemical, and isotopic perspective», Sedimentary Geology, vol.466, no106638, (DOI10.1016/j.sedgeo.2024.106638, Bibcode2024SedG..46606638Z, lire en ligne, consulté le )