Vacuum Energies of String Compactified on Torus
Nobuyuki Sakai, Ikuo Senda · Progress of Theoretical Physics · 1987
Progress of Theoretical Physics Vol. 75 No. 3 (1986) pp. 692–705:Vacuum Energies of String Compactified on Torus Norisuke Sakai and Ikuo Senda Progress of Theoretical Physics Supplement No.188 (2011) pp. 1–8:String Field Theories Taichiro Kugo