Queens Gambit Decline Defence

This is a declined version of the queens gambit that I play often and I thought I should share it with you (please use and tell me how it works)

from here white has a few options

he can take the pawn on b5 or the pawn on d5

most players (at the level i play) will take on b5 and play continues

this protects the pawn on d5 and frees up the long a3 to d8 diagonal for your dark squared bishop

play may continue with white controling the center a bit more, this normally turns out to be a closed game were black will have good development and with gain center control later in the game

please comment on this opening and name the defence

found the name very seldomly used ziblermints gambit