@ARTICLE{ Bennett02airev,
author = {Brandon Bennett and C. Dixon and M. Fisher and E. Franconi and I. Horrocks and U. Hustadt and de Rijke, M.},
title = {Combinations of Modal Logics},
journal = {AI Review},
year = {2002},
volume = {17},
pages = {1--20},
number = {1},
month = {March},
leeds_file = {combinations.ps}
}