Wykład 8
http://www.ch.ic.ac.uk/local/organic/tutorial/miller2/
http://stoltz.caltech.edu/litmtg/mechclub/2008/CDGLit06.pdf
http://isites.harvard.edu/fs/docs/icb.topic93502.files/Lectures_and_Handouts/33-Carbocations-1.pdf
http://www.sumanasinc.com/webcontent/animations/content/mannich.html