The subsequent development of rack railways is especially associated with a Swiss engineer, Nicholas Riggenbach, and his pupil Roman Abt, and the forms of rack introduced by them are those most commonly used.
The mountain section of the railway, on the Riggenbach system, was completed in 1883.
Long, which uses the Riggenbach system from the terminal to Petropolis, was constructed between 1881 and 1883.
19, see Riggenbach, Der trinitarische Taufbefehl (Giitersloh, 1903).
Riggenbach and Egli, in Hauck's Realencyklopeidie (1903).
It was first published by Riggenbach in 1877, and in this volume the other sources for his life are registered.
Riggenbach in Studien and Kritiken, 18 93, pp. 6 496 7 8).