Authors
| Ramirez, A (4) | Ramirez-Treviño, A (1) | Rams, JM (8) |
| Rand (1) | Rautenstrauch, C (1) | Reardon, P (1) |
| Recalde, L (51) | Reisig, W (5) | Requeno, JI (9) |
| Ribaudo, M (1) | Rocha, MP (2) | Rodríguez, C (1) |
| Rodríguez, D (11) | Rodríguez, RJ (5) | Rodríguez, GJ (1) |
| Rodríguez, RJ (4) | Romero, J (4) | Rovetto, C (4) |
| Rovetto, CA (1) | Roy, A (4) | Rozenberg, G (22) |
| Rude, U (1) | Ruiz (2) | Ruiz-Pesini, E (2) |
