García-Pacheco, F.J., Rambla-Barreno, F. and Seoane-Sepúlveda, J.B. 2008. $\mathsf Q$-linear functions, functions with dense graph, and everywhere surjectivity. MATHEMATICA SCANDINAVICA. 102, 1 (Mar. 2008), 156–160. DOI:https://doi.org/10.7146/math.scand.a-15057.