census, 1900, United States Census Office 12th; Steuart, William Mott; Census, United States Bureau of the (1905). Mines and quarries 1902 (на језику: енглески). Govt. Print. Off. стр. 980. „Bitumen mixed with clay was usually called asphaltum.”
„Asphalt and Bitumen”. Ullmann’s Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. 2005. doi:10.1002/14356007.a03_169.pub2.
Polaczyk, Pawel; Han, Bingye; Huang, Baoshan; Jia, Xiaoyang; Shu, Xiang (30. 10. 2018). „Evaluation of the hot mix asphalt compactability utilizing the impact compaction method”. Construction and Building Materials. 187: 131—137. ISSN0950-0618. doi:10.1016/j.conbuildmat.2018.07.117.
gov.ab.ca
energy.gov.ab.ca
„Oil Sands Glossary”. Oil Sands Royalty Guidelines. Government of Alberta. 2008. Архивирано из оригинала 1. 11. 2007. г. Приступљено 2. 2. 2008.
Muhammad Abdul Quddus (1992). „Catalytic Oxidation of Asphalt”. Thesis submitted to Department of Applied Chemistry; University of Karachi. Pakistan: Higher Education Commission Pakistan: Pakistan Research Repository. стр. 6, in ch. 2 pdf. Архивирано из оригинала 5. 2. 2011. г.CS1 одржавање: Формат датума (веза)
oildrop.org
Walker, Ian C. (1998), Marketing Challenges for Canadian Bitumen(PDF), Tulsa, OK: International Centre for Heavy Hydrocarbons, Архивирано из оригинала(PDF) 13. 3. 2012. г., „Bitumen has been defined by various sources as crude oil with a dynamic viscosity at reservoir conditions of more than 10,000 centipoise. Canadian "bitumen" supply is more loosely accepted as production from the Athabasca, Wabasca, Peace River and Cold Lake oil-sands deposits. The majority of the oil produced from these deposits has an API gravity of between 8° and 12° and a reservoir viscosity of over 10,000 centipoise although small volumes have higher API gravities and lower viscosities.”
„Oil Sands Glossary”. Oil Sands Royalty Guidelines. Government of Alberta. 2008. Архивирано из оригинала 1. 11. 2007. г. Приступљено 2. 2. 2008.
Walker, Ian C. (1998), Marketing Challenges for Canadian Bitumen(PDF), Tulsa, OK: International Centre for Heavy Hydrocarbons, Архивирано из оригинала(PDF) 13. 3. 2012. г., „Bitumen has been defined by various sources as crude oil with a dynamic viscosity at reservoir conditions of more than 10,000 centipoise. Canadian "bitumen" supply is more loosely accepted as production from the Athabasca, Wabasca, Peace River and Cold Lake oil-sands deposits. The majority of the oil produced from these deposits has an API gravity of between 8° and 12° and a reservoir viscosity of over 10,000 centipoise although small volumes have higher API gravities and lower viscosities.”
Muhammad Abdul Quddus (1992). „Catalytic Oxidation of Asphalt”. Thesis submitted to Department of Applied Chemistry; University of Karachi. Pakistan: Higher Education Commission Pakistan: Pakistan Research Repository. стр. 6, in ch. 2 pdf. Архивирано из оригинала 5. 2. 2011. г.CS1 одржавање: Формат датума (веза)
Polaczyk, Pawel; Han, Bingye; Huang, Baoshan; Jia, Xiaoyang; Shu, Xiang (30. 10. 2018). „Evaluation of the hot mix asphalt compactability utilizing the impact compaction method”. Construction and Building Materials. 187: 131—137. ISSN0950-0618. doi:10.1016/j.conbuildmat.2018.07.117.
