1. Review of flow interference between two circular cylinders in various arrangements;Zdravkovich;Trans. A.S.M.E. J. Fluid Eng.,1977
2. Experiments on the interference between pairs of aeroplane wires of circular and lenticular cross section;Pannell;Aero. Res. Council, Rep, Memo,1915
3. The interference between struts in various combinations;Biermann;National Advisory Committee for Aeronautics, Tech. Rep.,1933
4. Flow around two circular cylinders; Research Report;Zdravkovich,1975
5. Flow pattern in the gap between two cylinders in tandem;Zdravkovich;University of Salford Internal Report FM 5/72,1972