1. A study of weathered coal spectroscopic properties. (September 2017) Authors: Krumins, Janis; Yang, Zhiping; Zhang, Qiang; Yan, Min; Klavins, Maris Journal: Energy procedia Issue: Volume 128(2017) Page Start: 51 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Characterisation of humic acids in fen peat. (29th April 2020) Authors: Krumins, Janis; Klavins, Maris; Krukovskis, Raimonds Journal: International journal of agricultural resources, governance and ecology Issue: Volume 16:Number 1(2020) Page Start: 74 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Fen peat in environmentally friendly technologies. (August 2018) Authors: Krumins, Janis; Klavins, Maris; Kalnina, Laimdota Journal: Energy procedia Issue: Volume 147(2018) Page Start: 114 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗