Husak, M., Brajša, R. and Špoljarić, D. (2021) “On the Determination of the Solar Rotation Elements i, Ω and Period using Sunspot Observations by Ruđer Bošković in 1777”, Rudarsko-geološko-naftni zbornik, 36(3). doi: 10.17794/rgn.2021.3.6.