@book{499896,
	author = {Stiby, A.I. and et al.},
	title = {Adolescent cannabis and tobacco use and educational outcomes at age 16: birth cohort study},
	url = {\\Srvdatos\siis\docus\Revistas electrónicas\Addiction R.696\2015\Adolescent cannabis and tobacco use and educational outcomes at age 16.pdf}
}