| Experimental study of a clean burning vehicle fuel RL Hoekstra, K Collier, N Mulligan, L Chew International Journal of Hydrogen Energy 20 (9), 737-745, 1995 | 116 | 1995 |
| NOx emissions and efficiency of hydrogen, natural gas, and hydrogen/natural gas blended fuels RL Hoekstra, P Van Blarigan, N Mulligan SAE transactions, 761-773, 1996 | 114 | 1996 |
| Hydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio control RK Collier Jr, RL Hoekstra, DN Mulligan, DE Hahn US Patent 5,787,864, 1998 | 107 | 1998 |
| Hydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio control RK Collier Jr, RL Hoekstra, DN Mulligan, DE Hahn US Patent 5,666,923, 1997 | 97 | 1997 |
| Untreated exhaust emissions of a hydrogen-enriched CNG production engine conversion K Collier, RL Hoekstra, N Mulligan, C Jones, D Hahn SAE Technical Paper, 1996 | 82 | 1996 |
| An investigation of the state of creativity and critical thinking in engineering undergraduates E Sola, R Hoekstra, S Fiore, P McCauley Creative Education 8 (09), 1495, 2017 | 81 | 2017 |
| Hydrogen enriched natural gas as a clean motor fuel RK Collier Jr, RL Hoekstra, DN Mulligan, DE Hahn US Patent 5,660,602, 1997 | 79 | 1997 |
| Engine knock, a renewed concern in motorsports-a literature review JM Towers, RL Hoekstra SAE transactions, 2329-2343, 1998 | 51 | 1998 |
| NOx emissions and efficiency of Hydrogen RL Hoekstra, P Van Blarigan, N Mulligan Natural Gas, Natural Gas/Hydrogen Blends, SAE paper 961103, 1996 | 39 | 1996 |
| Demonstration of hydrogen mixed gas vehicles R Hoekstra, K Collier, N Mulligan HYDROGEN ENERGY PROGRESS 3, 1781-1781, 1994 | 31 | 1994 |
| Chaos analysis on in-cylinder pressure measurements L Chew, R Hoekstra, JF Nayfeh, J Navedo SAE Technical Paper, 1994 | 30 | 1994 |
| Infusing Leadership Education in the Undergraduate Engineering Experience: A Framework from UCF's eli2 T Kotnour, R Hoekstra, C Reilly, R Knight, J Selter Journal of Leadership Studies 7 (4), 48-57, 2014 | 29 | 2014 |
| Axiomatic based decomposition for conceptual product design MA Mullens, M Arif, RL Armacost, TA Gawlik, RL Hoekstra Production and Operations Management 14 (3), 286-300, 2005 | 20 | 2005 |
| Robotics and Automated Systems RL Hoekstra South-Western Thomson Learning, 1986 | 18 | 1986 |
| Optimizing internal combustion engine performance through response surface methodology TM Dvorak, RL Hoekstra SAE Technical Paper, 1996 | 16 | 1996 |
| Design for automated assembly: an axiomatic and analytical method RL Hoekstra Society of Manufacturing Engineers, 1989 | 11 | 1989 |
| Statistical process control and design of experiment process improvement methods for the powertrain laboratory T Dvorak, L Malone, R Hoekstra SAE Technical Paper, 2003 | 10 | 2003 |
| Garden table RL Hoekstra, M Mullens, SF Truntich, JR Hedman, R Moraga, SV Shelke US Patent 6,394,006, 2002 | 7 | 2002 |
| Design for assembly RL Hoekstra University of Cincinnati, 1992 | 7 | 1992 |
| Wheelchair table with ergonomic aid RL Hoekstra, M Mullens, J Gonzalez, RA Shah, PK Thupili, J Moen US Patent 6,450,570, 2002 | 6 | 2002 |
