Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on the paper "Semiclassical Dirac Theory of Tunnel Ionization"
  (by N.Milosevic, V.P.Krainov, and T.Brabec)   Some remarks are made on the articles by N.Milosevic, V.P.Krainov, T.Brabec
and our papers are about problem of semiclassical theory of tunnel ionization.

18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph