Search for exoplanet around northern circumpolar stars - Four planets around HD 11755, HD 12648, HD 24064, and 8 Ursae MinorisB.-C. Lee, M.-G. Park, S.-M. Lee, G. Jeong, H.-I. Oh, I. Han, J. W. Lee, C.-U. Lee, S.-L. Kim and K.-M. KimA&A, 584 (2015) A79DOI: https://doi.org/10.1051/0004-6361/201527076