1. Partitioning continuous curves;Bing;Bull. Amer. Math. Soc.,1952
2. J.W. Cannon, G.R. Conner, On the fundamental groups of one dimensional spaces, Preprint
3. The fundamental group of one-dimensional spaces;Curtis;Proc. Amer. Math. Soc.,1959
4. The fundamental groups of one-dimensional wild spaces and the Hawaiian earring;Eda;Proc. Amer. Math. Soc.,2002
5. Free σ-products and noncommutatively slender groups;Eda;J. Algebra,1992