Lets go with google books 500 Days The War in Eastern Europe 1944 1945 By Sean M Mcateer p 184 This Battle of Tali Ihantala probably convinced Stalin that conquering Finland was not worth the cost Finland at War 1939 45 By Philip Jowett Philip S Jowett Brent Snodgrass p 13 15 Had the Soviet 21st Army been victorious it could have continued north to take Helsinki and whole of the Finland would have been occupied The Finnish victory here under entry Battle of Tali Ihantala Just couple of examples for starters and no one has even started adding Finnish books to the list If this attribution is insisted it should be realized that it will not improve the article in any manner only convolute it