https://journals.sagepub.com/doi/pdf/10.1068/ecvp03a (Publisher version)
Del Viva, M., Burr, D., Danti, S., & Leo, F. (2003). Disambiguation of motion direction by first-order and second-order motion mechanisms. Poster presented at 26th European Conference on Visual Perception (ECVP 2003), Paris, France.