@Article{Karanov_OEspan,
	author = {B. Karanov and T. Xu and N. A. Shevchenko and D. Lavery and R. Killey and P. Bayvel},
	title = {Span length and information rate optimisation in optical communication systems using single-channel digital backpropagation},
	journal = {Optics Express},
	volume = {25},
	number = {21},
	pages = {25353-25362},
	year = {2017},
	url = {https://opg.optica.org/oe/fulltext.cfm?uri=oe-25-21-25353&id=375039}
}