Every sum of cubes in F2[t] is a strict sum of 6 cubes. - Luis H. Gallardo; D. R. Heath-Brown (Finite Fields Their Appl., 2007)

Burgess's Bounds for Character Sums. - D. R. Heath-Brown (Number Theory and Related Fields, 2013)

Burgess bounds for short mixed character sums. - D. R. Heath-Brown; L. B. Pierce (J. Lond. Math. Soc., 2015)