@Book{Baldesarra2014,
author  = "Baldesarra, Mark [Sonst.]",
title   = "e².motion. Earth System Mass Transport Mission (Square) - Concept for a Next Generation Gravity Field Mission - Final Report "Satellite Gravimetry of the Next Generation (NGGM-D")",
year    = "2014",
address = "München",
series  = "DGK: B (Angewandte Geodäsie)",
volume  = "Reihe B, Angewandte Geodäsie ; 318",
url     = "https://publikationen.badw.de/en/042499507",
}