Twist-3 distribution amplitudes of the pion and kaon from the QCD sum rules Tao Huang, Ming-Zhen Zhou and Xing-Hua Wu Eur. Phys. J. C, 42 3 (2005) 271-279 Published online: 15 August 2005 DOI: 10.1140/epjc/s2005-02285-x