1. J. A. Ober , Mineral commodity summaries 2018 , Reston, VA , 2018
2. M. Appl , Ammonia: principles and industrial practice , Wiley-VCH , Weinheim, Chichester , 1999
3. R. Bañares-Alcántara , G.Dericks III , M.Fiaschetti , P.Grünewald , J.Masa Lopez , E.Tsang , A.Yang , L.Ye and S.Zhao , Analysis of Islanded Ammonia-based Energy Storage Systems , University of Oxford , 2015
4. C. W. Bale and E.Bélisle , Fact-Web suite of interactive programs , www.factsage.com , accessed 14/11/18