@book{87,
	author = {Halperin, Isaac and Butty, Enrique M.},
	title = {Curso de derecho comercial},
	publisher = {Depalma},
	year = {2000},
	address = {Buenos Aires :},
	edition = {4a. ed.},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Curso de Derecho Comercial-l87302.jpg}
}