RT Journal Article SR Electronic(1) A1 Pichler, M.YR 2019 T1 Underground Sun Storage Results and Outlook JF , VO 2019 IS 1 SP 1 OP 4 DO https://doi.org/10.3997/2214-4609.201900257 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609.201900257