A Quick CPU Capacity Plan. - Charles W. Hopf (Int. CMG Conference, 1989)

Measuring Printer Activity and Host Resource Consumption. - Charles W. Hopf; Thomas E. Bell (Int. CMG Conference, 1990)

There May Not Be a Free Lunch But You Can Get Close. - Charles W. Hopf (Int. CMG Conference, 1994)

Capacity Planning For Tape Drives: Learning To Count. - Charles W. Hopf (Int. CMG Conference, 1995)

Whan Capacity Planning Becomes a Capacity Problem. - Charles W. Hopf (Int. CMG Conference, 2011)