@article {modena2016quadratic,
	title = {Quadratic interaction estimate for hyperbolic conservation laws, an overview},
	journal = {Contemporary Mathematics. Fundamental Directions},
	volume = {59},
	year = {2016},
	pages = {148{\textendash}172},
	publisher = {Peoples{\textquoteright} Friendship University of Russia},
	author = {Stefano Modena}
}
