Zitat
Macias, J., Plinninger, R.J., Alber, M. & Büchi, E. (2020): On the Definition and Classification of Mixed Face Conditions (MFC) in Hard Rock TBM Tunnelling.- in Li, Ødegaard, A.H., Høien, J. & Macias, J. (Hrsg., 2020): Proceedings EUROCK2020, Hard Rock Engineering, paper no. 144, Trondheim/N., ISBN: 978-82-8208-072-9.