For the purposes of a project, I've been looking for the following two papers referred to in Serre's "Divisibilité de certaines fonctions arithmétiques":


Landau (E.), - Über die Eitenlung der positiven ganzen Zahlen in vier Klassen nach der Mindestzahl der zu ihrer additiven Zusammensetzung erforderlichen Quadrate, Arch. der Math. und Phys.(3) 13, 1908, p. 305-312


Watson: (G.N.), - Über Ramanujansche Kongruenzeigenschaften der Zerfällungsanzahlen (I), Math. Z., t. 39, 1935, p. 712-731. 


Despite my best attempts, I have been unable to find the papers themselves or the relevant issues of these journals either. I would be really grateful if someone to provide me a link to either or tell me how I might find them. 


(Perhaps I'm asking for too much, but are there English translations of these available somewhere?)



Looking for a paper by Landau and one by Watson
Here's the Landau paper at the Internet Archive: <https://archive.org/details/archivdermathem37unkngoog/page/n324/mode/1up>


Here's the Watson paper at the EuDML: <https://eudml.org/doc/168581>, which links to the GDZ for a scan.


