Unjust enrichment:

Accursius action allowed analysis another's loss appears Article assets assumpsit Baldus Bartolus Cassation causa century a.d. Civil Code claim classical commentary compilers condictio condiction constructive trust contract Corpus Juris Cour de Cassation court Court of Cassation creditors debt decisions defendant discussed doctrines Donellus Droit Civil duress enrichment through another's equity express fraud French gains received German Code gloss glossators ideas improvements involved Julius Rosenthal Justinian's land lawyers legal ground legal system lessee liability lien limitation Lord Mansfield Martinus medieval ment merely misappropriation mistake modern negotiorum gestio obligation owner payment plaintiff Pomponius Pothier praetor praetorian principle of unjust problem provides quasi-contract recovery relief for unjust rem verso Restatement restitution remedies restitutionary result richment Roman law Roman texts rule Savigny Stiftung rom seems slave solutions specific subrogation suggested technique third persons tion tort tracing Ulpian unjust enrichment principle unjust enrichment remedies Wellspacher writers Zeitschrift der Savigny