2002, The therapeutic effects of Cserkesölö thermal water in osteoarthritis oft he knee: A double blind controlled follow up study.

Kovacs I, Bender T.

Rheumatol. Int. 2002;21:218-221.  doi: 10.1007/s00296-001-0167-6.

https://pubmed.ncbi.nlm.nih.gov/12036207/