add a paper

README.md

@@ -320,6 +320,7 @@ Sorted alphabetically by company name and product name.
 - [Pen Plotter as a Low-Cost Platform for Rapid Device Prototyping with Solution-Processable Nanomaterials (2023) (PDF)](https://onlinelibrary.wiley.com/doi/pdf/10.1002/adem.202300226)
 - [Preparation of V2O5 Thin Film by Sol–Gel Technique and Pen Plotter Printing](https://www.proquest.com/docview/2791602751)
 - [PatternPortrait: Draw Me Like One of Your Scribbles (2024)](https://arxiv.org/abs/2401.13001)
+- [Can I teach a robot to replicate a line art (2019)](https://arxiv.org/abs/1910.07860)
 
 ### Patents