https://confluence-sale.prozorro.org/pages/viewpage.action?pageId=60948512#id-%D0%A1%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D1%96%D1%97subsoil-english-manual-CBD3-NE-UC-10-07
https://gitlab.prozorro.sale/public-projects/documentations/-/blob/master/Subsoil/subsoil-english/subsoil-english.md#%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%B0-%D0%BA%D0%BE%D1%88%D1%82%D1%96%D0%B2-%D0%B4%D0%BE-%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%B2%D0%BD%D0%BE%D0%B3%D0%BE-%D0%B1%D1%8E%D0%B4%D0%B6%D0%B5%D1%82%D1%83