The HARPS search for southern extra-solar planets - XXIX. Four new planets in orbit around the moderatly active dwarfs HD 63765, HD 104067, HD 125595, and HIP 70849
D. Ségransan, M. Mayor, S. Udry, C. Lovis, W. Benz, F. Bouchy, G. Lo Curto, C. Mordasini, C. Moutou, D. Naef, F. Pepe, D. Queloz and N. Santos
