Article Reviews of journals (1991). Isis: International Review Devoted to the History of Science and Its Cultural Influences (pp. 285-325). (/isis/citation/CBB000036110/) unapi

Article Rosen, Edward; Hilfstein, Erna (1987)
Copernicus' earliest astronomical treatise. Dialectics and Humanism (pp. 257-265). (/isis/citation/CBB000055814/) unapi

Article Hilfstein, Erna (1986-87 (pub. 1988))
Was Valentinus Otho a mathematics professor at the University of Heidelberg?. Organon: International Review (p. 221). (/isis/citation/CBB000037837/) unapi

Article Hilfstein, Erna (1986)
Copernicus and the “third comet”. Polish Review (pp. 315-316). (/isis/citation/CBB000055697/) unapi

Article Hilfstein, Erna (1983)
The English version of Nicholas Copernicus' Complete works. Dialectics and Humanism (pp. 63-70). (/isis/citation/CBB000007408/) unapi

Book Hilfstein, Erna (1980)
Starowolski's biographies of Copernicus. (/isis/citation/CBB000005466/) unapi

Article Hilfstein, Erna (1979)
Bernardino Baldi and his two biographies of Copernicus. Polish Review (pp. 67-80). (/isis/citation/CBB000023373/) unapi

Thesis Hilfstein, Erna (1978)
Starowolski's biographies of Copernicus. (/isis/citation/CBB001563983/) unapi