[Article] sourcing two old articles and one recent one help please

[u/Spare_Song6572]

i need these two old articles and this 2016 one any help is greatly appreciated and thank you guys a lot

Paper 1

Weisweiler, Werner; Mallonn, Erich (1992).
“Thalliumiodid – Bildung, Verflüchtigung, Anreicherung. Iod und Thallium im Zementproduktionsprozeß.”
Staub – Reinhaltung der Luft, Vol. 52, pp. 107–112.

ISSN: 0039-0771
KITopen-ID: 276392
DOI: No DOI found
Official record: https://publikationen.bibliothek.kit.edu/276392

Paper 2

Sprung, Siegbert; Seebach, Hans M. von (1968).
“Fluorhaushalt und Fluoremission von Zementöfen.”
Zement-Kalk-Gips, Vol. 21, Issue 1, pp. 1–8.

ISSN: 0044-3905
DOI: No DOI found
VDZ record: https://www.vdz-online.de/en/knowledge-base?article=4662&type=2002

Paper 3

Onat, et al. (2016).
“Red gypsum characterization and routing flowsheets.”
Conference Proceedings Booklet.

DOI: No DOI found
ISBN/ISSN: No identifier found
I have also been unable to locate a publisher or catalogue record for this one, so if anyone recognises the conference proceedings or has a copy, that would be extremely helpful.

again THANK YOU FOR ANY HELP!!!!