aggravated by carbamazepine therapy for epilepsy. Postgrad Med J. 1986;62:497-8. 2. Tomson T, Kenneback G. Arrhythmia, heart rate variability, and antiepileptic drugs. Epilepsia. 1997; 38:S48-51. 3. Kasarskis EJ, Berger R, Nelson KR. Carbamazepineinduced cardiac dysfunction. Characterization of two distinct syndromes. Arch Intern Med. 1992;152:186-91. 4. Kennebäck G, Ericson M, Tomson T, Bergfe...

249 words 150 words Text 2065 words 1000 words 19 references 15 refs 5 Tables 1 Figure one table or figure Need to add another definition !!! Address correspondence to: Beverley Balkau Inserm CESP Center for Research in Epidemiology and Public Health, U1018, 16 Avenue Paul Vaillant Couturier, F-94807 Villejuif cedex, France tel: + 33 1 45 59 51 61 fax: + 33 1 47 26 94 54 e-mail: beverley.balkau...

We investigate the problem of construction of small-size universal Petri nets with inhibitor arcs. We consider four descriptional complexity parameters: the number of places, transitions, inhibitor arcs, and the maximal degree of a transition, each of which we try to minimize. We give six constructions having the following values of parameters (listed in the above order): (30, 34, 13, 3), (14, ...

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