@inproceedings{1046841,
    title = "Complexity of products of modal logics",
    author = "Maarten, Marx",
    year = "1997",
    pages = "187-192",
    publisher = "Πανεπιστήμιο Κύπρου",
    booktitle = "Α' Πανελλήνιο Συμπόσιο Λογικής: πρακτικά"
}