1. A new database on basic research in homeopathy;Albrecht;Homeopathy,2002
2. The serials directory: an international reference book,1999
3. Die Geschichte der Homöopathie in Ungarn;Koczian,2005
4. Weltgeschichte der Homöopathie – Länder – Schulen – Heilkundige;Dinges,1996
5. The history of homeopathy in the Russian Empire until World War I, as compared with other European countries and the USA: similarities and discrepancies;Kotok,1999