Berkovits, Nathan [UNESP]2022-04-292022-04-292006-01-01The Tenth Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Gravitation and Relativistic Field Theories, v. 1, p. 165-172.http://hdl.handle.net/11449/228222After reviewing the Green-Schwarz superstring, the superstring is covariantly quantized by constructing a BRST operator from the fermionic constraints and a bosonic pure spinor ghost variable. Physical massless vertex operators are constructed and, for the first time, N-point tree amplitudes are computed in a manifestly ten-dimensional super-Poincaré covariant manner.165-172engCapítulo de livro10.1142/9789812704030_00122-s2.0-84990009540