Prayitno, T.B. “ON THE FORMULATION OF GUAGE TRANSFORMATION FOR THE GROSS-PITAEVSKII EQUATION”.
JRSKT - Jurnal Riset Sains Dan Kimia Terapan
, vol. 2, no. 2, Dec. 2012, pp. 162-5, doi:10.21009/JRSKT.022.02.