Selected topics in e^+e^- collisions

Content : 1) The leading twist pion wave function, 2) "Improved" QCD sum rules with non-local condensates, 3) Pion and kaon form factors and charmonium decays: theory vs experiment, 4) $\gamma^{*}\gamma\pi^{o}$ - form factor, 5) The new non-local axial anomaly, 6) Cross sections $\gamma\gamma --> \pi^+\pi^- , K^+K^-, K_S K_S $