| First Name | Last Name | Institutions | Articles |
|---|---|---|---|
| Radka | Marčeková | Matej Bel University in Banská Bystrica | 2 |
| Rasa | Žilienė | Klaipėda University | 2 |
| Robin | Kunju Mol Raj | Institute of Technology and Business in České Budějovice | 2 |
| Rudolf | Sivák | Bratislava University of Economics and Business | 2 |
| Roman | Rak | Ambis University | 2 |
| Romel Ramón | González-Díaz | Centro Internacional de investigación y Desarrollo | 2 |
| Ruta | Velika | Daugavpils University | 2 |
| Radoslav | Kostev | Technical University of Sofia | 2 |
| Romana | Heinzová | Tomas Bata University in Zlín | 2 |
| Rolandas | Strazdas | Vilnius Gediminas Technical University (VILNIUS TECH) | 2 |
| Ramunė | Budrionytė | Vilnius University | 2 |
| Reem A. | Alqahtani | Taif University | 2 |
| Riza | Gabdyssalyk | D. Serikbayev East Kazakhstan Technical University | 1 |
| Radovan | Bryndza | University of Žilina | 1 |
| Roland | Vogt | FOM University of Applied Sciences | 1 |
| Ramona | Pirvu | University of Craiova | 1 |
| Ronaldo | Mendes | Federal University of Pará | 1 |
| Rullyana Puspitaningrum | Mamengko | National Kaohsiung University of Science and Technology; Yogyakarta State University |
1 |
| Richard | Pospíšil | Tomas Bata University in Zlín | 1 |
| Rimantas | Stašys | Klaipėda University | 1 |