Measuring Requirements Testing. - Theodore Hammer; Linda H. Rosenberg; Lenore Huffman; Lawrence E. Hyatt (ICSE, 1997)

Requirements Metrics - Value Added. - Theodore Hammer; Linda H. Rosenberg; Lenore Huffman; Lawrence E. Hyatt (RE, 1997)

Automated Requirements Management - Beware HOW You Use Tools: An Experience Report. - Theodore Hammer; Lenore Huffman (ICRE, 1998)