Captain Marvel was once upon a time in the 1940's a superhero more popular than Superman, though Superman is the obvious victor over time (and a long time at that). I don't know what Captain Marvel is ...
Wischnegradsky, J [Vyshnegradskii, I. A.] . Sur la theorie generale des regulateurs. In: Comptes Rendus de l'Académie des Sciences de Paris, Vol. 83, 1876, p.318-320, (translated here: On the General ...