David McCarthy, Scott A. Vanstone. Embedding (r, 1)-designs in finite projective planes. Discrete Mathematics, 19(1):67-76, 1977. [doi]
@article{McCarthyV77,
title = {Embedding (r, 1)-designs in finite projective planes},
author = {David McCarthy and Scott A. Vanstone},
year = {1977},
doi = {10.1016/0012-365X(77)90120-0},
url = {http://dx.doi.org/10.1016/0012-365X(77)90120-0},
researchr = {https://researchr.org/publication/McCarthyV77},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {19},
number = {1},
pages = {67-76},
}