Taghavaei-Gangali, Saeed, Taghvaei-Gangali, Saeed, moradi, shahram, Tahvildari, Kambiz. Theoretical and Conformational Study of Pinched-cone Interconversion in monosubstituted tri-methylsilyle ethynyl Derivative of Calix[4]arene. Journal of Physical & Theoretical Chemistry. 2005;2(3):23-26. doi: