Aggressive behavior with people

[Alpina]

First of all i wana thank everyone here who gave attention and helped me without making me hate my dog.
I read ur advices, and saw the links some of you sent me. And was really helpful.
I got few clickers and started training her with clickers. Im using hot dogs now as treats, And she loves them. On the street, when people are around, i whistle to her, and she looks at me so i praise her, and it works with passing people with no barks or pulling. Also every once in a while i give her a treat for not barking. This has been very helpful, Now with the clicker in hand, its also much easier. I knew it was good for training, but didnt expect this result.
Barking/Aggression is now 90% less. she rarely barks at someone, and when she does she is satisfied with one bark perhaps. i think with some time this will be over.
Thanks again.