Mottram, J., Perry, K. L., Lizardi, P. M., Lührmann, R., Agabian, N., & Nelson, R. G. (1989). Isolation and sequence of four small nuclear U RNA genes of Trypanosoma brucei subsp. brucei: Identification of the U2, U4, and U6 RNA analogs.

Mottram, J., K L. Perry, P M. Lizardi, R. Lührmann, N. Agabian, و R G. Nelson. Isolation and Sequence of Four Small Nuclear U RNA Genes of Trypanosoma Brucei Subsp. Brucei: Identification of the U2, U4, and U6 RNA Analogs. 1989.

Mottram, J., et al. Isolation and Sequence of Four Small Nuclear U RNA Genes of Trypanosoma Brucei Subsp. Brucei: Identification of the U2, U4, and U6 RNA Analogs. 1989.