Enhancing the convergence region of a sequence of bilinear transformations. John Gill — 1978 Mathematica Scandinavica
Convergence of composition sequences of bilinear and other transformations { f n } , f n → z . Gill, John — 1997 International Journal of Mathematics and Mathematical Sciences
Inner composition of analytic mappings on the unit disk. Gill, John — 1991 International Journal of Mathematics and Mathematical Sciences
Outer compositions of hyperbolic/loxodromic linear fractional transformations. Gill, John — 1992 International Journal of Mathematics and Mathematical Sciences