@Article{ Vallejo-Medina_SIERRA:39-48,

author = { Pablo Vallejo-Medina and JUAN CARLOS SIERRA FREIRE } ,

title = { Relationship between drug use and sexual assertiveness in a Spanish male drug-dependent sample },

journal = { Salud y Drogas },

year = { 2015 },

volume = { 15 },

pages = { 39-48 },

}