P. Leupen, Philip of Leyden, a fourteenth-century jurist. A study of his life and treatise 'De cura reipublicae et sorte principantis'
Ullmann, W.
Bijdragen en mededelingen betreffende de geschiedenis der Nederlanden, 1983-01, Vol.98 (1), p.88-90 [Periódico revisado por pares]openjournals.nl
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