where A represents the number of cells of type A, B represents the number of cells of type B that interact with A through paracrine signaling, g 11 represents autocrine (A to A) signaling action, g 21 represents paracrine (B to A) signaling action, and α A and β A represent proliferation and degradation Figure : A network graph shows the citation relationship between mathematical models of bone remodeling that use the power law approach popularized by and the mass action kinetics approach popularized by and . Each dot indicates a model publication, and curves represent a citation from one article to another. Yellow dots indicate temporal models, and dark blue dots indicate spatiotemporal models. Larger dots correspond to models with more publications (cited by). Models most connected to other articles are higher in the diagram (map relevance), while the left-to-right organization aids in clarity and label visibility (cluster). Not all labels are shown. The naming convention is the first author's last name followed by the year of publication. This literature map was created using the online tool app.litmaps.com.