Zhu, L.Y., Qian, S.B., Zhao, E.-G., Fernández Lajús, E. and Han, Z.-T. 2015. Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars. Acta Polytechnica CTU Proceedings. 2, 1 (Feb. 2015), 183–187. DOI:https://doi.org/10.14311/APP.2015.02.0183.