Spieth, J.; Brooke, G.; Kuersten, S.; Lea, K.; Blumenthal, T. Operons in C. Elegans: polycistronic mRNA precursors are processed by trans-splicing of SL2 to downstream coding regions. Cell. 1993, 73 (3): 521–532. PMID 8098272. doi:10.1016/0092-8674(93)90139-H.
Spieth, J.; Brooke, G.; Kuersten, S.; Lea, K.; Blumenthal, T. Operons in C. Elegans: polycistronic mRNA precursors are processed by trans-splicing of SL2 to downstream coding regions. Cell. 1993, 73 (3): 521–532. PMID 8098272. doi:10.1016/0092-8674(93)90139-H.