Doppler imaging of stellar surface structure - XXIV. The lithium-rich single K-giants DP Canum Venaticorum and DI PisciumZs. Kővári, H. Korhonen, K. G. Strassmeier, M. Weber, L. Kriskovics and I. SavanovA&A, 551 (2013) A2DOI: https://doi.org/10.1051/0004-6361/201220227