Complex sentence: Laurenţiu Rădvan writes that Basarab either dethroned or peacefully succeeded Radu Negru after 1304 and before 1324; other historians, including Vlad Georgescu, say that Basarab succeeded his father, Thocomerius, around 1310.
Split into simpler sentences: Laurenţiu Rădvan writes that Basarab either dethroned or peacefully succeeded Radu Negru between 1304 and 1324. Other historians, such as Vlad Georgescu, state that Basarab succeeded his father, Thocomerius, around 1310.