  In course of the organization of Workshop III entitled "Cited References
Analysis Using CRExplorer" at the International Conference of the International
Society for Scientometrics and Informetrics (ISSI2021), we have prepared three
reference publication year spectroscopy (RPYS) analyses: (i) papers published
in Journal of Informetrics; (ii) papers regarding the topic altmetrics; and
(iii) papers published by Ludo Waltman (we selected this researcher since he
received the Derek de Solla Price Memorial Medal during the ISSI2021
conference). The first RPYS analysis has been presented live at the workshop
and the second and third RPYS analyses have been left to the participants for
undertaking after the workshop. Here, we present the results for all three RPYS
analyses. The three analyses have shown quite different seminal papers with a
few overlaps. Many of the foundational papers in the field of scientometrics
(e.g., distributions of publications and citations, citation network and
co-citation analyses, and citation analysis with the aim of impact measurement
and research evaluation) were retrieved as seminal papers of the papers
published in Journal of Informetrics. Mainly papers with discussions of the
deficiencies of citation-based impact measurements and comparisons between
altmetrics and citations were retrieved as seminal papers of the topic
altmetrics. The RPYS analysis of the paper set published by Ludo Waltman mainly
retrieved papers about network analyses, citation relations, and citation
impact measurement.
