Ben Babcock, Adam Van Tuyl. Revisiting the spread and covering numbers. Australasian J. Combinatorics, 56:77-84, 2013. [doi]
@article{BabcockT13, title = {Revisiting the spread and covering numbers}, author = {Ben Babcock and Adam Van Tuyl}, year = {2013}, url = {http://ajc.maths.uq.edu.au/pdf/56/ajc_v56_p077.pdf}, researchr = {https://researchr.org/publication/BabcockT13}, cites = {0}, citedby = {0}, journal = {Australasian J. Combinatorics}, volume = {56}, pages = {77-84}, }