I'd like to know the "Girls' Generation" one

ITC Lubalin Graph  Suggeriti da alvarothomaz 
RNS Camelia  Suggeriti da mlledwyer 

The "Girls' Generation" text looks close to RNS Camelia. Some differences but you can modify after converting to outlines in Illustrator to make it exact.

Reminds me Lubalin Graph. Perhaps is based on this font.