Looking for primary sources on Admiral Maximilian Njegovan

[Kriegsmarine Großadmiral]

Hello, I am writing a paper on Admiral Maximilian Njegovan. I am looking for any kind of primary sources that mention him and would be very grateful if anyone could share anything they have on him.

In the Croatian State Archives I searched through the only documents where Njegovan could have been mentioned, "Tagesbefehl der Hafenadmiralat Pola" from 1913 to 1918. My search resulted in a very few findings, mainly promotions, awards and assignments.

Other sources I already have on my disposal are the "Rangliste der k. u. k. Kriegsmarine 1914, 1915, 1916, 1917, 1918" that can be accessed on the Hungaricana site.

I must also mention I own the book by Antonio Schmidt-Brentano, "Die Österreichischen Admirale, Band II: 1896-1914, Osnabrück, 2000." and that it's a great source, but it's not a primary source.

If you have anything on him, please post it here, or send me a private message if you wish to contact me through my e-mail.

Thanks