Muirhead, Robert Franklin: "Some graphical methods for determining centres of gravity"
Muirhead, Robert Franklin: "Theorems analogous to Newton's theorems on symmetric functions: with elementary proofs"
Taylor, David G: "On certain formulae connected with the function (cos n
- cos n
)/(cos - cos )"Picken, D K: "On summable series and Bernoullian numbers", [Title]