Ebadollah S. Mahmoodian, Nasrin Soltankhah. On the existence of (v, k, t) trades. Australasian J. Combinatorics, 6:279-292, 1992. [doi]
@article{MahmoodianS92a, title = {On the existence of (v, k, t) trades}, author = {Ebadollah S. Mahmoodian and Nasrin Soltankhah}, year = {1992}, url = {http://ajc.maths.uq.edu.au/pdf/6/ocr-ajc-v6-p279.pdf}, researchr = {https://researchr.org/publication/MahmoodianS92a}, cites = {0}, citedby = {0}, journal = {Australasian J. Combinatorics}, volume = {6}, pages = {279-292}, }