Both Origami Omnibus by Kasahara, and Unit Origami Multidimensional Transformations by Fuse have equilateral triangular flat units for constructing polyhedra, including icosahedron. Fuse's method uses separate joint units. None of these are particularly stable.
Meenakshi > > So if you know such model please let me know the name, author and if > possible where its diagram is published. > > Thanks. > > -- > Jorge Jaramillo > >