Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Highlights of Cern Workshop on Charm Production in A+A Collisions   Models and experimental effort concerning open and hidden charm production in
nuclear collisions discussed at Cern Workshop in December 99 are reviewed. The
most recent development is also mentioned.

32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat