- I.Y Aref'eva, R Gorbachev, P.B Medvedev, D.V Rychkov, “Descent relations in cubic superstring field theory”, J. High Energy Phys., 2008, no. 01, 2008,
005 
- Sebastian Uhlmann, “A Note on kappa-Diagonal Surface States”, J. High Energy Phys., 2004, no. 11, 2004,
003