Update README.md

updated usage in scientific works.

Author: Gabrock94

README.md

@@ -134,6 +134,11 @@ Pyaesthetics has been used in different scientific publication. The most relevan
 ### Presentation
 - Gabrieli, G., Scapin, G., & Esposito, G. (2022). Pyaesthetic, a python package for empirical aesthetic analysis. XXVII
 Conference of the International Association of Empirical Aesthetics, Philadelphia, United States. https://giuliogabrieli.it/posters/iaea2022/
+- Gabrieli, G., & Esposito, G. (2018a, May 3–5). Neuroaesthetics and web design: How expertise shapes our perception of
+web pages. Concepts, Actions and Objects (CAOS), Rovereto, Italy.
+- Gabrieli, G., & Esposito, G. (2018b, August 30–September 2). Neuroaesthetic of websites: Evaluating the impact of
+expertise and exposure to website on aesthetic judgment. International Association of Empirical Aesthetics Congress
+(IAEA), Toronto, Canada.
 
 ## Contribution Guidelines for pyaesthetics