Abbreviation for "this study" 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. [31]. 

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.

Best regards

Wilko
As already indicated in my comment, you can use a symbol such as an asterisk to denote the work at hand. Then, explain the meaning of this symbol in the table caption where you should have the space therfor.