Imre Nagy's letter to András Hegedüs, Lajos Ács, and József Mekis pg. 1.

András Hegedüs, Lajos Ács, and József Mekis repeatedly called on Nagy on March 25, to announce his promised self-criticism, which Nagy accepted in his letter of March 28, but asked for his opinion to be written after healing from his illness.
Reference Nr.: HU MNL OL M–KS–276.f.62.cs.,1. őe.