# Template:Math/EQ CT99Axisymmetric

 ${\displaystyle \Phi (\varpi ,z){\biggr |}_{\mathrm {axisym} }}$ ${\displaystyle =}$ ${\displaystyle -{\frac {G}{\pi }}\iint \limits _{\mathrm {config} }{\biggl [}{\frac {\mu }{(\varpi ~\varpi ^{'})^{1/2}}}{\biggr ]}K(\mu )\rho (\varpi ^{'},z^{'})2\pi \varpi ^{'}~d\varpi ^{'}dz^{'}}$ ${\displaystyle \mathrm {where:} ~~~\mu \equiv \{4\varpi \varpi ^{'}/[(\varpi +\varpi ^{'})^{2}+(z-z^{'})^{2}]\}^{1/2}}$