Google-based Impact Factor (2019): 2.75

• h-index (February 2019): 17
• i10-index (February 2019): 39
• h5-index (February 2019): 9
• h5-median (February 2019): 9

( The data was calculated based on Google Scholar Citations. Click Here to Learn More. )

• Academic Journals Database
• Aerospace Database
• BASE (Bielefeld Academic Search Engine)
• Civil Engineering Abstracts
• COPAC
• EBSCOhost
• EconPapers
• Elektronische Zeitschriftenbibliothek (EZB)
• Google Scholar
• Harvard Library
• IDEAS
• Infotrieve
• JournalTOCs
• LOCKSS
• MathEDUC
• MathGuide
• MathSciNet
• MIAR
• NewJour
• Open J-Gate
• PKP Open Archives Harvester
• Publons
• RePEc
• SHERPA/RoMEO
• SocioRePEc
• Standard Periodical Directory
• Technische Informationsbibliothek (TIB)
• The Keepers Registry
• UCR Library
• Ulrich's
• Universe Digital Library
• WorldCat