C++ :: Range-based Looping Over Container Of References?

Is it possible to create a class that stores (non-const) references to some objects and enables users direct access by using range-based for loops on them?

Code: class container {
public:
void add(int& value);
void remove(int& value);
...
};
int main()
{
container c;
for (auto& value:c) {
// `value' should be accessible as type `int&' instead of being a pointer, `std::reference_wrapper<int>' or something like that
}
}