“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, no. 24, pp. 137–151, Sep. 2020, Accessed: Nov. 06, 2026. Available: https://revista.laborum.es/index.php/revsegsoc/article/view/422