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A rule of thumb derivation of the Dirac-Born-Infeld action for D-branes isstudied \`a la Fradkin and Tseytlin, by simply integrating out of thesuperstring coordinates in a narrow strip attached to the D-branes. In case ofsuperstrings, the coupling of Ramond-Ramond fields as well as theDirac-Born-Infeld type coupling of the Neveu Schwarz-Neveu Schwarz fields comeout in this way.Comment: 9 pages, Latex, minor correction

A RULE OF THUMB DERIVATION OF BORN–INFELD ACTION FOR D-BRANES