Zoran Skoda moving charge

$$\overrightarrow{\mathrm{E}}(\overrightarrow{\mathrm{R}}, t)=\left.\frac{q}{4 \pi \epsilon_{0}}\left[\left(\frac{\overrightarrow{\mathrm{R}}}{\mathrm{R}^{3}}\right)+\left(\frac{\mathrm{R}}{c}\right) \frac{d}{d t}\left(\frac{\overrightarrow{\mathrm{R}}}{\mathrm{R}^{3}}\right)+\frac{1}{\mathrm{c}^{2}} \frac{d^{2}}{d t^{2}}\left(\frac{\overrightarrow{\mathrm{R}}}{\mathrm{R}}\right)\right]\right|_{t-R/c}$$

• R.P.Feynman, R.B.Leighton, M.Sands, Feynman lectures on physics, 1964
• Cochran and Heinrich, https://phys.libretexts.org/Bookshelves/Electricity_and_Magnetism/Book%3A_Applications_of_Maxwells_Equations_(Cochran_and_Heinrich)/01%3A_Maxwells_Equations/1.01%3A_Fundamental_Postulates