B. B. Bobga, John L. Goldwasser, Anthony J. W. Hilton, Peter D. Johnson Jr.. Completing partial latin squares: Cropper's question. Australasian J. Combinatorics, 49:127-152, 2011. [doi]
@article{BobgaGHJ11,
title = {Completing partial latin squares: Cropper's question},
author = {B. B. Bobga and John L. Goldwasser and Anthony J. W. Hilton and Peter D. Johnson Jr.},
year = {2011},
url = {http://ajc.maths.uq.edu.au/pdf/49/ajc_v49_p127.pdf},
researchr = {https://researchr.org/publication/BobgaGHJ11},
cites = {0},
citedby = {0},
journal = {Australasian J. Combinatorics},
volume = {49},
pages = {127-152},
}