@inbook {Horst1998, title = {Sortes: sacred books as instant oracles in late antiquity}, booktitle = {The Use of Sacred Books in the Ancient World. Ed. L. V. Rutgers etc.}, year = {1998}, pages = {143-173}, publisher = {Peeters}, organization = {Peeters}, address = {Leuven}, author = {Horst, Pieter} }