@article{202005.0457,
	doi = {10.20944/preprints202005.0457.v3},
	url = {https://doi.org/10.20944/preprints202005.0457.v3},
	year = 2021,
	month = {April},
	publisher = {Preprints},
	author = {S. A. Larin},
	title = {The Mass-gap in Quantum Chromodynamics and a Restriction on Gluon Masses},
	journal = {Preprints}
}