Bott, S., BOTT, S., COLEMAN, A., & ATWOOD, J. (1987). Alternative methods of modifying the calixarene conformation. The synthesis and molecular structures oft-butylcalix[4]arene methyl ether complexed with aluminum alkyl species. Journal of Inclusion Phenomena, 5(6), pp. 747-758. doi:10.1007/BF00656595

Bott, Simon, SG BOTT, AW COLEMAN, and JL ATWOOD. "Alternative Methods of Modifying the Calixarene Conformation. The Synthesis and Molecular Structures Oft-butylcalix[4]arene Methyl Ether Complexed With Aluminum Alkyl Species." Journal of Inclusion Phenomena 5, no. 6 (1987): 747-758.

Bott, Simon, SG BOTT, AW COLEMAN, and JL ATWOOD. "Alternative Methods of Modifying the Calixarene Conformation. The Synthesis and Molecular Structures Oft-butylcalix[4]arene Methyl Ether Complexed With Aluminum Alkyl Species." Journal of Inclusion Phenomena 5.6 (1987): 747-758.