Citroen C2 brake drum

Hello everyone and thanks beforehand.
I have disassembled the wheel and nut of the bushing that holds the brake drum, but I can't get the drum.
I have read that if some blows to release the shoes, that if a screwdriver through the holes of the wheel screws, etc.
I have removed the handbrake and turn freely.
Surely it has some trick.

I don't know where to look. Let's see if Alguen can lend me a hand.

Thank you.

hahahaha the drums do not have tricks if you have to hit the strong drum without fear, so that the oxide breaks and then you have two screwdrivers one in front of the other, between the drum and the poster luck