@book { ImprovementstoaHybridAlgorithmforRapidGenerationof3DOptimalLaunchVehicleAscentTrajectories,
    title = "Improvements to a Hybrid Algorithm for Rapid Generation of 3-D Optimal Launch Vehicle Ascent Trajectories",
    author = "Peter F. {Gath}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832419738",
    url = "https://m.diplom.de/document/217816"
}