Black-box group algorithm for generating set-finding problem

You might be referring to either of these:

• Black-box group algorithm for minimum size generating set-finding problem: Finds a generating set of minimum size.
• Black-box group algorithm for small generating set-finding problem: Finds a generating set that is small, i.e., its size is bounded by the logarithm of the size of the group. However, this generating set need not be a generating set of minimum size for the group.