Mafteaḥ ha-Sh.u-t. : = Digest of the responsa literature - ham- Māḵôn le-Ḥēqer ham-Mišpāṭ hā-'Ivrî (Yerûšālayim) (Pirsume ha-Makhon le-ḥeḳer ha-mishpaṭ ha-ʿivri ʿa. sh. Yiśraʾel Mats)