Cooper-Sarkar, A., Ingelman, G., Long, K., Roberts, R., & Saxon, D. (1988). Measurement of the longitudinal structure function and the small x gluon density of the proton. Springer-Verlag.

Cooper-Sarkar, A., G. Ingelman, K. Long, R. Roberts, and D. Saxon. Measurement of the Longitudinal Structure Function and the Small X Gluon Density of the Proton. Springer-Verlag, 1988.

Cooper-Sarkar, A., et al. Measurement of the Longitudinal Structure Function and the Small X Gluon Density of the Proton. Springer-Verlag, 1988.