Eberhard, Wolfram; Müller (1936). Hope-Johnstone (ed.). "Contributions to the Astronomy of the San-kuo period". Monumenta Serica (in German). 2 (1). Taylor Francis: 163, 164. JSTOR40726335.
Eberhard, Wolfram; Müller (1936). Hope-Johnstone (ed.). "Contributions to the Astronomy of the San-kuo period". Monumenta Serica (in German). 2 (1). Taylor Francis: 156. JSTOR40726335.
Eberhard, Wolfram; Müller (1936). Hope-Johnstone (ed.). "Contributions to the Astronomy of the San-kuo period". Monumenta Serica (in German). 2 (1). Taylor Francis: 150–156. JSTOR40726335.