1. Aspartic acid racemization in tooth enamel from living humans;Masters Helfman,1975
2. Aspartic acid racemization in dentine as a measure of aging;Masters Helfman;Nature,1976
3. A probable case of accidental inhumation of 1,600 years ago;Zimmerman;Bull. N.Y. Acad. Med.,1975
4. Age determination of an Alaskan mummy: morphological and biochemical correlation;Masters;Science,1978
5. Amino acid racemization dating of bone and shell;Masters,1978