TRefArray :: accessing elements

Hi! it is written in http://root.cern.ch/root/html/TRefArray.html that elements can be accessed with TObject *obj = array.At(i);

1. if TRefArray* array ; elements are still accessed with array.At(i) or with array->At(i) (as with any other pointer)?
2. if i know the type of obj (a derived class of TObject) can i do directly a cast like lets say AliAODTrack* track = (AliAODTrack*) array->At(i) ?

Thanks,
Adrian