@article{goldmann_ahola_mankinen_kantola_komulainen_telkki_tanskanen_2016, 
  title={Determination of Phenolic Hydroxyl Groups in Technical Lignins by Ionization Difference Ultraviolet Spectrophotometry (∆ε-IDUS method)}, 
  DOI={10.3311/ppch.9269}, 
  publisher={Periodica Polytechnica Budapest University of Technology and Economics}, 
  author={Goldmann and Ahola and Mankinen and Kantola and Komulainen and Telkki and Tanskanen}, 
  year={2016}, 
  month={Sep}
  }