(PDF document) Breath tests in medicine.
Phillips M
Scientific American (1992); 267(1): 74-79

(PDF document) Ion-trap detection of volatile organic compounds in alveolar breath.
Phillips M and Greenberg J
Clinical Chemistry (1992); 38(1): 60-66

(PDF document) Detection of carbon disulfide in breath and air: A possible new risk factor for coronary artery disease.
Phillips M
International Archives of Occupational and Environmental Health (1992); 64: 119-123