Webster, W. R. An analysis of colour as an objective property of objects in the world Abstract not available Color;Color (Philosophy);Open Access;2001;thesis(doctorate);1959.1/9248;monash:6334 2017-09-27
    https://bridges.monash.edu/articles/thesis/An_analysis_of_colour_as_an_objective_property_of_objects_in_the_world/5445838
10.4225/03/59cb229b54b5a