Gumbinnen - Goldap Operation

[otto1]

I am looking for books on Gumbinnen or Goldap Operation
I read:
Tank Battles in East Prussia and Poland 1944-1945: Vilkavishkis, Gumbinnen/Nemmersdorf, Elbing, Wormditt/Frauenburg, Kielce/Lisow - I Nebolsin
Dieckert, K. and Großmann, H. Der Kampf um Ostpreußen
The Eastern Front 1943–1944: The War in the East and on the Neighbouring Fronts - Germany and the Second World War series.
P. Buttar - Battleground Prussia
Ostpreußen 1944/45 - R. Lakowski

Books can be in english, german, russian, and french.
Thank You!

[adamb]

I have all. Write priv.