@ARTICLE{Skarbe72,
AUTHOR = "Skarbek W., Zembrzuski K.",
TITLE = "Some properties of continuous machines",
JOURNAL = "Bull. Acad.. Polon.. Sci., Ser. Sci. Math. Astronom. Phys.",
NUMBER = "7",
PAGES = "583-589",
VOLUME = "XX",
YEAR = "1972",
}