PRACE DOKTORSKIE - SZWECJA 552,658 KLEYWEGT GERARD J. 0 for the structurally challenged [- a "good model--building and refinement practice" : tutorial using 0 and X-PLOR] : [a tutorial] / Gerard J. Kleywegt ; [Department of Molecular Biology, University of Uppsala, Sweden]. - Uppsala : [University of Uppsala], 1996. - 73, [1] s. : il. ; 25 cm