참고문헌
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- Amer. Math. Monthly v.83 Commuting mapping and fixed points G. Jungck https://doi.org/10.2307/2318216
- Proc. Amer. Math. Soc. v.76 Periodic and fixed points and commuting mappings https://doi.org/10.2307/2043015
- Proc. Amer. Math. Soc. v.86 Common fixed points for commuting and compatible maps on compacta
- Proc. Amer. Math. Soc. v.86 Uniformly contractive fixed point in compact metric space S. Leader https://doi.org/10.2307/2044417
- Proc. Amer. Math. Soc. v.85 On fixed point theorems of contractive type M. H. Shih;C. C. Yeh https://doi.org/10.2307/2043869