Problem 10845. - Ciprian Demeter (Am. Math. Mon., 2001)

Another Collinearity Result for Triangles: 10845. - Ciprian Demeter; Li Zhou 001 (Am. Math. Mon., 2002)

Mean value estimates for Weyl sums in two dimensions. - Jean Bourgain; Ciprian Demeter (J. Lond. Math. Soc., 2016)