Vietri, Andrea (2008). “Sailing towards, and then against, the graceful tree conjecture: some promiscuous results”. 《Bull. Inst. Comb. Appl.》 53: 31–46. ISSN1183-1278. Zbl1163.05007.
zbmath.org
Vietri, Andrea (2008). “Sailing towards, and then against, the graceful tree conjecture: some promiscuous results”. 《Bull. Inst. Comb. Appl.》 53: 31–46. ISSN1183-1278. Zbl1163.05007.