The impact propagation tool computes impact scores for research objects by considering different types of mentions in papers, not limited to structured citations but also including “indirect” citations such as plain mentions or footnotes. The proposed approach extends the u-Index score 1) adapting it to cover indirect citations; 2) developing a method to determine the citation type (e.g.: usage, mention) other than the section in which it is included; and 3) exploring how to best consider metrics obtained by other tools used in the project into the formula used to compute the impact of research artifacts.