Yasushi Okumura and Kohzo Ito, “The polyrotaxane gel: a topological gel by figure-of-eight cross-links”, Advanced Materials, 13(7), 485-487(2001).

Yasushi Okumura and Kohzo Ito, “The polyrotaxane gel: a topological gel by figure-of-eight cross-links”, Advanced Materials, 13(7), 485-487(2001).

https://advanced-onlinelibrary-wiley-com.utokyo.idm.oclc.org/doi/10.1002/1521-4095(200104)13:7%3C485::AID-ADMA485%3E3.0.CO;2-T