C. Palumbo

The use of high-efficiency particulate air-filter respirators to protect hospital workers from tuberculosis. A cost-effectiveness analysis.

B. Farr, A M Anglim, B M Farr, 1994, The New England journal of medicine.

Is Porter's Five Forces Framework Still Relevant? A study of the capital/labour intensity continuum via mining and IT industries

Diane A. Isabelle, Kevin Horak, Sarah McKinnon, 2020 .