Fu, Yu, Mu, Lan, Zeng, Xi, Zhao, Jiang Lin, Redshaw, Carl, Ni, Xin Long, Yamato, Takehiko, "An NBD-armed thiacalix[4]arene-derived colorimetric and fluorometric chemosensor for Ag+: A metal–ligand receptor of anions", Journal of the Chemical Society. Dalton Transactions, 2013