. "Rich, A." . "Bancroft, D." . "Williams, L.D." . "Egli, M." . "131D" . "5'-D(*CP*GP*CP*GP*CP*G)-3', SPERMINE, -110C" . "THE LOW-TEMPERATURE CRYSTAL STRUCTURE OF THE PURE-SPERMINE FORM OF Z-DNA REVEALS BINDING OF A SPERMINE MOLECULE IN THE MINOR GROOVE" . . . . . . . . . .