1. Lorentzian warped products and static space-times, PhD Thesis;Allison,1985
2. Geodesic completeness in static spacetimes;Allison;Geom. Dedicata,1988
3. Pseudocovexity in Lorentzian doubly warped products;Allison;Geom. Dedicata,1991
4. Twice warped products, MSc Thesis;Baker,1997
5. Global Lorentzian Geometry;Beem,1996