@book { EvolutionaryspiritualconceptionsoflifeSriAurobindoTeilharddeChardinandKenWilberincomparison,
    title = "Evolutionary, spiritual conceptions of life  - Sri Aurobindo, Teilhard de Chardin and Ken Wilber in comparison",
    author = "Michael {Leicht}",
    year = "2007",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640093878",
    url = "https://www.hausarbeiten.de/document/111307"
}