Creator/Author/Editor: Greif, J.
Seeliger, M. and Kitze, M. and Errmann, R. and Richter, S. and Ohlert, J. M. and Chen, W. P. and Guo, J. K. and Göğüş, Ersin and Güver, T. and Aydın, Berk and Mottola, S. and Hellmich, S. and Fernandez, M. and Aceituno, F. J. and Dimitrov, D. and Kjurkchieva, D. and Jensen, E. and Cohen, D. and Kundra, E. and Pribulla, T. and Vanko, M. and Budaj, J. and Mallonn, M. and Wu, Z. -Y. and Zhou, X. and Raetz, St. and Adam, C. and Schmidt, T. O. B. and Ide, A. and Mugrauer, M. and Marschall, L. and Hackstein, M. and Chini, R. and Haas, M. and Ak, T. and Güzel, E. and Özdönmez, A. and Ginski, C. and Marka, C. and Schmidt, J. G. and Dinçel, B. and Werner, K. and Dathe, A. and Greif, J. and Wolf, V. and Buder, S. and Pannicke, A. and Puchalski, D. and Neuhaeuser, R. (2015) Ground-based transit observations of the HAT-P-18, HAT-P-19, HAT-P-27/WASP40 and WASP-21 systems. Monthly Notices of the Royal Astronomical Society, 451 (4). pp. 4060-4072. ISSN 0035-8711 (Print) 1365-2966 (Online)