The National Social Security Institute can declare the joint and several liability of a city council with respect to a debt contracted by a commercial company in bankruptcy when it acts in a similar way to so-called "company groups". revsegsoc [Internet]. 2020 Sep. 8 [cited 2026 Nov. 6];(24):137-51. Available from: https://revista.laborum.es/index.php/revsegsoc/article/view/422