I am writing a scientific paper and compare my results with those of other studies in several tables and figures. When presenting the data, I have one column in the table/ one axis in the diagram, where I provide the sources of the data (with very low space). The other studies I can abbreviate with the reference, e.g. .
Does anyone have a good idea how to abbreviate the reference to my own data? I could write "t.s." for "this study", but it seems strange to me.