Multiparadigm language, by Timothy Budd, creator of Little Smalltalk, Oregon State University. Combines procedural (imperative), object-oriented, logic, and functional programming, in one coherent, unified system.
Large, well structured bibliography of papers on visual language research, also has brief list of links to other visual language related research resources.
IEEE Symposium on Visual Languages. Visual programming languages, software visualization, usability of visual programming, end-user programming, visual techniques in software design and testing, and visual representations and grammars for web-based se...