Synchronous versus diachronous methods in the measurement of obsolescence by citation studies

Type/token-taken informetrics

Journal of the American Society for Information Science and Technology

Continuous, weighted Lorenz theory and applications to the study of fractional relative impact factors

Information Processing and Management: an International Journal - Special issue: Infometrics

Continuous, weighted Lorenz theory and applications to the study of fractional relative impact factors

Information Processing and Management: an International Journal - Special issue: Infometrics

Confronting the myth of rapid obsolescence in computing research

Communications of the ACM

Revisiting citation aging: a model for citation distribution and life-cycle prediction

Scientometrics

The lengthening of papers' life expectancy: a diachronous analysis

Scientometrics