Some of Asser's written works include:
- *Schets van het Nederlandsche Handelsrecht* (Outline of Dutch Commercial Law, 1864)
- *Rechtsgeleerd Onderzoek naar het Karakter van de Overeenkomsten tusschen Nederland en de Oost-Indische Bezittingen* (A Legal Study of the Character of the Treaties between the Netherlands and the East Indies, 1866)
- *Handleiding tot de Beoefening van het Nederlandsch Handelsrecht* (Guide to the Practice of Dutch Commercial Law, 1875)
- *Schets van het Internationaal Privaatrecht* (Outline of Private International Law, 1880)
- *Das internationale Privatrecht* (Private International Law, 1889)
- *Eene Algemeene Regeling der Rechtsbetrekkingen tot den Oorlog* (A General Regulation of Legal Relations to War, 1895)
- *Handleiding tot het Volkenrecht* (Guide to International Law, 1906)
Asser's writings on international law were highly influential and helped to shape the development of the field. He was a strong advocate for the peaceful settlement of disputes between states and for the codification of international law. His work on the Hague Conventions was a major step forward in the development of international law and helped to establish a framework for the peaceful resolution of conflicts.