| Acid leaching of coal and coal-ashes☆ M Seferinoğlu, M Paul, Å Sandström, A Köker, S Toprak, J Paul Fuel 82 (14), 1721-1734, 2003 | 83 | 2003 |
| Petrographic properties of major coal seams in Turkey and their formation S Toprak International Journal of coal geology 78 (4), 263-275, 2009 | 81 | 2009 |
| Coal geology and coal quality of the Miocene Mugla basin, southwestern Anatolia, Turkey X Querol, A Alastuey, F Plana, A Lopez-Soler, E Tuncali, S Toprak, ... International Journal of Coal Geology 41 (4), 311-332, 1999 | 68 | 1999 |
| Chemical and Technological Properties of Turkish Tertiary Coals E Tuncalı, B Çiftçi, N Yavuz, S Toprak, A Köker, Z Gencer, H Ayçık, ... MTA General Directorate, 2002 | 65 | 2002 |
| Türkiye tersiyer kömürlerinin kimyasal ve teknolojik özellikleri E Tuncalı, B Çiftçi, N Yavuz, S Toprak, A Köker, Z Gencer, H Ayçık, ... Maden Tetkik ve Arama Genel Müdürlüğü, Ankara, 2002 | 30 | 2002 |
| Petrographical, chemical and FT-IR properties of a suberinitic coal from Aydin–Germencik area, Western Turkey EC Sutcu, S Toprak International journal of coal geology 116, 36-45, 2013 | 24 | 2013 |
| Removal of mineral matter from Silopi-Harput asphaltite by acid treatment J Gulen, I Doymaz, S Piskin, S Toprak Energy sources 27 (15), 1457-1464, 2005 | 22 | 2005 |
| Varto, Hınıs, Bulanık, Malazgirt yöresi linyitlerinin petrografik özellikleri İ ŞENGÜLER, S TOPRAK Geological Bulletin of Turkey 34, 15-22, 1991 | 18* | 1991 |
| A fault controlled, newly discovered Eskişehir Alpu coal basin in Turkey, its petrographical properties and depositional environment S Toprak, EC Sutcu, I Senguler International Journal of Coal Geology 138, 127-144, 2015 | 17 | 2015 |
| Alpagut - Dodurga (Osmancık - Çorum) bölgesi çevresindeki kömürlerin oluşum ortamları ve özelliklerinin belirlenmesi S Toprak Hacettepe Üniversitesi Fen Bilimleri Enstitüsü, Doktora tezi çalışması, 1996 | 16 | 1996 |
| Black Sea sapropels: relationship to kerogens and fossil fuel precursors SD Brown, G Chiavari, V Ediger, D Fabbri, AF Gaines, O, S Toprak Fuel 79, 1725-1742, 2000 | 15 | 2000 |
| Batı Türkiye kömürlerine ait bazı karakteristik özellikler J Gülen, S Toprak, S Pişkin Karaelmas Fen ve Mühendislik Dergisi 2 (1), 27-33, 2012 | 12 | 2012 |
| The Effect of Aqueous Caustic and Various Acid Treatments on the Removalof Mineral Matter in Asphaltite I Doymaz, JF Gulen, S Pişkin, S Toprak Energy Sources 29, 337-346, 2007 | 12 | 2007 |
| Determination of depositional environments and properties of coals located in the vicinity of Alpagut–Dodurga (Osmancik–Çorum) region S Toprak Ph. D. thesis, Hacettepe University, Ankara, Turkey (in Turkish), 1996 | 9 | 1996 |
| Petrographical properties of a semi-precious coaly stone, Oltu stone, from eastern Turkey S Toprak International journal of coal geology 120, 95-101, 2013 | 7 | 2013 |
| Gölbaşı Harmanlı (Adıyaman) Kömürlerinin Organik Jeokimyasal ve Petrografik Özellikleri O KAVAK, S TOPRAK Jeoloji Mühendisliği Dergisi 35 (1), 43-78, 2011 | 7 | 2011 |
| Malzemeleri (çelik, çinko, kurşun, pirinç, alüminyum) koruyan koruyucu yağların zamanla değişen fizikokimyasal özellikleri S Toprak ÇÜ Fen-Edebiyat Fakültesi–Yüksek Lisans Tezi, 2007 | 7 | 2007 |
| Güney Trakya Bölgesindeki Kömürlerin Petrografik İncelemesi ve Ortamsal Yorumu İ Şengüler, S Toprak, H Kara, A Öner, E Tuncalı, N Kır Türkiye 12, 173-180, 2000 | 7 | 2000 |
| Petrographic Characterization of Coals in Kozlu and Kilic Formations (Westphalian A), Zonguldak, Turkey S Toprak, M Deul AAPG Bulletin 68 (12), 1929-1929, 1984 | 7 | 1984 |
| Üst solunum yolu infeksiyonlarnnda viral etkenlerin araştnrnlmasn AK Çelikbaş, N Ymlmaz, A Ulu, Ö Ergönül, B Dokuzoğuz, Ş Kara, ... İnfeksiyon Derg 19 (3), 377-380, 2005 | 5 | 2005 |
