1. Medical journals;F, Lock S.,1986
2. World list of periodical literature in arthritis and rheumatism;M, Stecher R.;Arthritis Rheum
3. The literature of rheumatism;T, Morton L.; L, Bywaters E.G.;Ann Rheum Dis
4. Citation indexes for Science;Garfield, E.;Science,1955
5. An evaluation of the rheumatology periodical literature used in Britain and the USA;Thorpe, P.;Methods Inf Med,1972