Bott, S., ATWOOD, J., BOTT, S., JONES, C., & RASTON, C. (1992). Aluminium-fused bis-p-tert-butylcalix[4]arene: A double cone with two π-arene ⋯ H interactions for included methylene chloride. J. Chem. Soc., Chem. Commun., 18, pp. 1349-1351. doi:10.1039/c39920001349

Bott, Simon, JL ATWOOD, SG BOTT, C. JONES, and CL RASTON. "Aluminium-fused Bis-p-tert-butylcalix[4]arene: A Double Cone With Two π-arene ⋯ H Interactions for Included Methylene Chloride." J. Chem. Soc., Chem. Commun. 18 (1992): 1349-1351.

Bott, Simon, et al. "Aluminium-fused Bis-p-tert-butylcalix[4]arene: A Double Cone With Two π-arene ⋯ H Interactions for Included Methylene Chloride." J. Chem. Soc., Chem. Commun. 18 (1992): 1349-1351.