- Differential equations--Addresses, essays, lectures (1)
- Functions of complex variables--Addresses, essays, lectures (1)
- Nichtlineare partielle Differentialgleichung--Formale Potenzreihe--Reihenlösung. DB (1)
- Nichtlineare partielle Differentialgleichung--Holomorphe Lösung. DB (1)
- Nichtlineare partielle Differentialgleichung--Singuläre Lösung. DB (1)
- Pfaff's problem--Addresses, essays, lectures (1)