1. Kirkendell, W.M. (Ed.)Am. Heart J. 1982,104, 2.2.
2. Sheldrick, G.M.SHELXS, program for the solution of crystal structures; Univ. of Gottingen, 1986.
3. Karaulov, A. MAP:An interactive molecular grahics program to aid crystal structure analysis; School of Chemistry and Applied Chemistry; University of Wales, Cardiff, 1994b.
4. Sheldrick G.M.SHELXL92, program for refinement of crystal structures, Univ. of Gottingen, 1992.
5. Karaulov, A. SNPI.Molecular Plotting Program; Univ. of Wales; Cardiff, 1994a.