Wilfried J. Bartz ... [et al.] Wilfred L. Guerin ... [et al.] Wilfried Brauer ...[et al.] Wilfred L. Guerin ... [et al.]. William A. Barrett ... [et al.] Wilfried J. Bartz. Wilfried J. Bartz, Joachim Wolff. William J. Bruns ... [et al.] William J. Curran ... [et al.]. William S. Klug ... [et al.