(c) Biography
The biographies of the kings written generally by the court poets are another source of historical information. Bana's Harshacharita, Bilhana's Vikramankadeva Charita (about Vikramaditya), Vakpati's Gaudavaho (about Yasovarman), Sandhyakaranandi's Ramacharita are the important biographies written by the court poets or chroniclers.
However the chronology of the literary works is a vexing problem, as Dr. R.C. Majumdar says: "the chronology of literary works has been a baffling problem almost throughout the course of Indian history."