References

1

ZEUS Collab., M. Derrick et al., Phys. Lett. B369 (1996) 55.

2

ZEUS Collab., M. Derrick et al., Phys. Lett. B356 (1995) 129.

3

ZEUS Collab., M. Derrick et al., Phys. Lett. B348 (1995) 665.

4

J. D. Bjorken, in International Workshop on Deep Inelastic Scattering and Related Subjects, Eilat, Israel, ed. A. Levy (World Scientific, 1994) 151.

5

A. H. Mueller and W.-K. Tang, Phys. Lett. B284 (1992) 123.

6

V. Del Duca and W.-K. Tang, Phys. Lett. B312 (1993) 225.

7

J. Pumplin, Phys. Rev. D50 (1994) 6811.

8

H.-U. Bengtsson and T. Sjöstrand, Comp. Phys. Comm. 46 (1987) 43.

9

T. Sjöstrand, CERN-TH.6488/92 (1992).

10

H1 Collab., I. Abt et al., Nucl. Phys. B445 (1995) 195.

11

ZEUS Collab., M. Derrick et al., in Proceedings of the International Europhysics Conference on HEP, Brussels (1995) EPS-0380.

12

L. E. Sinclair, Ph.D. thesis, McGill University (1996).

13

J. D. Bjorken, Phys. Rev. D47 (1992) 101.

14

E. Gotsman et al., Phys. Lett. B309 (1993) 199.

15

R. S. Fletcher and T. Stelzer, Phys. Rev. D48 (1993) 5162.

16

D0 Collab., S. Abachi et al., Phys. Rev. Lett. 76 (1996) 734.

17

CDF Collab., F. Abe et al., Phys. Rev. Lett. 74 (1995) 885.

18

P. Bruni and G. Ingelman, in Proceedings of the International Europhysics Conference, Marseille, France, July 1993, eds. J. Carr and M. Perrotet, (Ed. Frontieres, Gif-sur-Yvette, 1994) 595.

19

G. Ingelman and P. E. Sclein, Phys. Lett. B152 (1985) 256.

20

ZEUS Collab., M. Derrick et al., Phys. Lett. B342 (1995) 417.

21

H1 Collab., I. Abt et al., Phys. Lett. B348 (1995) 681.

22

ZEUS Collab., M. Derrick et al., Z. Phys. C68 (1995) 29.

23

K. Goulianos, in Topical Conference on Hard Diffractive Processes, Eilat, Israel (February, 1996).