Hans Irschik,
"The Cayley variational principle for continuous-impact problems: a continuum mechanics based version in the presence of a singular surface"
, in Journal of Theoretical and Applied Mechanics, Vol. 50, Nummer 3, Seite(n) 717-727, 8-2012, ISSN: 1429-2955
Original Titel:
The Cayley variational principle for continuous-impact problems: a continuum mechanics based version in the presence of a singular surface