Read more at:
“Monitorul de Suceava” (April 29, 2014)
History of the Solka Sanatorium by Dr. Joseph Poras (May 2006)
Solka: An Unlikely Story From A Place That Isn’t What It Used To Be by Iona (Jane) Rostos
“Die Stimme” article on Dr. Hermann Poras by Dr. Ferdinand Eisenhauer (February 1993)