How to sidestep circular inclusion in c++? [duplicate]

This question already has an answer here:

• Resolve build errors due to circular dependency amongst classes 8 answers

I have two header files as follows:

"elements.h"

#include <vector>
#include "nodes.h" // circular inclusion!!!

#ifndef ELEMENTS_H
#define ELEMENTS_H

class Element {
  public:
    // constructors and methods...
  private:
    std::vector<Node*> nodes;
};

#endif // ELEMENTS_H

"nodes.h"

#include <vector>
#include "elements.h" // circular inclusion!!!

#ifndef NODES_H
#define NODES_H

class Node {
  public:
    // constructors and methods...
  private:
    std::vector<Element*> elements;
};

#endif // NODES_H

How can I solve this problem (to keep the same dependencies between the classes) without circular inclusion? And in the same time to keep this declarations in different files "elements.h" and "nodes.h". Is this possible?