S.  Bera, Dey, K., Pal, T. K., Halder, A., Tothadi, S., Karak, S., Addicoat, M., and Banerjee, R., ?Porosity switching in polymorphic porous organic cages with exceptional chemical stability?, Angewandte Chemie-International Edition, vol. 58, no. 13, pp. 4243-4247, 2019.