| An analysis of vegetation restoration on opencast oil shale mines in Estonia M Pensa, A Sellin, A Luud, I Valgma Restoration ecology 12 (2), 200-206, 2004 | 94 | 2004 |
| Usage of Estonian oil shale E Väli, I Valgma, E Reinsalu Oil Shale 25 (2S), 101-114, 2008 | 86 | 2008 |
| Estonian oil shale resources calculated by GIS method I Valgma Oil Shale 20 (3; SUPP), 404-411, 2003 | 48 | 2003 |
| Quality control of oil shale production in Estonian mines I Valgma, E Reinsalu, S Sabanov, V Karu Oil Shale 27 (3), 239-249, 2010 | 43 | 2010 |
| Oil shale resources for oil production E Reinsalu, I Valgma Oil Shale 24 (1), 9, 2007 | 38 | 2007 |
| Oil Shale mining-related research in Estonia I Valgma Oil Shale 26 (4), 445-451, 2009 | 35 | 2009 |
| Future of oil shale mining technology in Estonia V Karu, A Västrik, A Anepaio, V Väizene, A Adamson, I Valgma Oil Shale 25 (2), 125-134, 2008 | 35 | 2008 |
| Precision of oil shale energy rating and oil shale resources K Koitmets, E Reinsalu, I Valgma Oil Shale 20 (1), 15-24, 2003 | 34 | 2003 |
| Geographical Information System for Oil Shale Mining-MGIS I Valgma Tallinn Technical University Press, 2002 | 30 | 2002 |
| Application of modelling tools in Estonian oil shale mining area V Karu, A Västrik, I Valgma Oil Shale 25 (2), 135-144, 2008 | 27 | 2008 |
| Sustainable mining conditions in Estonia I Valgma, M Leiaru, V Karu, R Iskül 11th International Symposium" Topical Problems in the Field of Electrical …, 2012 | 26 | 2012 |
| Geotechnical processes in closed oil shale mines E Reinsalu, I Valgma Oil Shale 20 (3; SUPP), 398-403, 2003 | 26 | 2003 |
| Technogenic water in closed oil shale mines E Reinsalu, I Valgma, H Lind, K Sokman Oil Shale 23 (1), 15-29, 2006 | 23 | 2006 |
| Kaevandatud maa E Reinsalu, A Toomik, I Valgma Tallinna Tehnikaülikool, 2002 | 23 | 2002 |
| Post-stripping processes and the landscape of mined areas in Estonian oil shale open casts I Valgma Oil Shale 17 (2), 201-212, 2000 | 23 | 2000 |
| Possibilities of oil shale mining under the Selisoo mire of the Estonia oil shale deposit M Orru, V Vaizene, JR Pastarus, Y Systra, I Valgma Environmental Earth Sciences 70, 3311-3321, 2013 | 22 | 2013 |
| High selective oil shale mining V Vaeizene, I Valgma, R Iskuel, M Kolats, M Nurme, V Karu Oil Shale 30 (2S), 305-325, 2013 | 20 | 2013 |
| Underground mining challenges for Estonian oil shale deposit II Valgma, T Tammeoja, A Anepaio, V Karu, A Västrik Oil shale 73, 4, 2008 | 17 | 2008 |
| Oil shale mining developments in Estonia as the bases for sustainable power industry I Valgma, V Karu, A Viil, M Lohk 4th International Symposium" Topical Problems in the Field of Electrical and …, 2007 | 16 | 2007 |
| Map of oil shale mining history in Estonia I Valgma Proceedings II. 5th Mining History Congress, Greece, Milos Conference Centre …, 2001 | 16 | 2001 |
Vivika VäizeneSpecialist in Department of Mining, Tallinn University of TechnologyVerified email at ttu.ee
