External Links

    Journal: Inf. Comput.

    Volume 136, Issue 2

    67 -- 108Mark Levene, George Loizou. Null Inclusion Dependencies in Relational Databases
    109 -- 142Rob J. van Glabbeek, Frits W. Vaandrager. The Difference between Splitting in n and n+1
    143 -- 164G. Venkatesan, Udi Rotics, M. S. Madanlal, Johann A. Makowsky, C. Pandu Rangan. Restrictions of Minimum Spanner Problems
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