On projective two-dimensional Finsler spaces with special metric
  We present the English translation of the paper where one special class of Finsler spaces was introduced. Now this class is known as so called "Kropina spaces". The article was written in 1958 and published in Russian in "Trudy seminara po vektornomu i tenzornomu analizu" ("Workshops of the Seminar in vector and tensor Analysis"), vol. XI, 1961. 
V.K. Kropina