* [geodesist.ru : helmert3d](https://geodesist.ru/threads/helmert3d.86763/) * [geodesist.ru : Calculation of 7 parameters](https://geodesist.ru/threads/vychislenie-7-parametrov.71307/) * [geodesist.ru : ConcordShell](https://geodesist.ru/threads/concordshell.5053/#post-74003)
