Lehmuskallio A. More Grimaces, Fewer Smiles: Notes on The Thin Line Between The Smile and Grimace in Photographic Depictions. Membrana [Internet]. 2017 May 15 [cited 2024 Apr. 29];2(1):64–67. Available from: https://www.journals.membrana.org/index.php/membrana/article/view/Asko-Lehmuskallio-More-Grimaces-Fewer-Smiles