German Panzer Corp/Group records

I'm searching for a digitised version of PzKorps Guderian (Panzer Corps Guderian: Summary Report) and PzGruppe Kleist (Panzer Group Kleist, War Diary). These are sources used by Karl-Heinz Frieser in his seminal work 'The Blitzkrieg Legend: The 1940 Campaign in the West'. I'm hoping that these records exist digitally and that someone can point me in the right direction?

PzKorps Guderian is followed by 'BA-MA, RH 21-2/54' and PzGruppe Kleist is followed by 'BA-MA, RH 21-1/18'. These are obviously pinpoint citations but I have no idea what databases they refer to.

I'm an amateur researcher in the area of primary source German military records and any help/suggestions would be greatly appreciated! Google is of absolutely zilch use in this area.

(Originally posted under 'Military Training, Doctrine and Planning' before noticing this forum)

 

BA-MA is the Bundesarchiv Militaerarhiv : -

https://www.bundesarchiv.de/bundesarchiv/organisation/abteilung_ma/index.html.de

 

Thank you!