Extending graph (discrete) derivative descriptors to N-tuple atom-relations

1. Santiago, O.M.
2. Marrero-Ponce, Y.
3. Cabrera, R.M.
4. Barigye, S.J.
5. Martínez-López, Y.
6. Martínez, L.M.A.
7. De León, J.O.G.
8. Perez-Giménez, F.
9. Torrens, F.