Проект в архиве
https://delphipages.live/ru/%D1%80%D0%B0%D0%B7%D0%BD%D0%BE%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%BD%D1%8B%D0%B9/maximilian-graf-von-trauttmansdorff
https://de.wikipedia.org/wiki/Isaak_Volmar
https://ru.wikipedia.org/wiki/%D0%92%D0%B5%D1%80%D1%82,_%D0%98%D0%BE%D0%B3%D0%B0%D0%BD%D0%BD_%D1%84%D0%BE%D0%BD
https://www.wikiwand.com/ru/%D0%9B%D0%B5%D0%BE%D0%BF%D0%BE%D0%BB%D1%8C%D0%B4_%D0%92%D0%B8%D0%BB%D1%8C%D0%B3%D0%B5%D0%BB%D1%8C%D0%BC_%D0%90%D0%B2%D1%81%D1%82%D1%80%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B9