@Article{zbMATH03818039,
Author = {Jan {Marik} and Clifford E. {Weil}},
Title = {{Products of powers of nonnegative derivatives}},
FJournal = {{Transactions of the American Mathematical Society}},
Journal = {{Trans. Am. Math. Soc.}},
ISSN = {0002-9947},
Volume = {276},
Pages = {361--373},
Year = {1983},
Publisher = {American Mathematical Society (AMS), Providence, RI},
Language = {English},
DOI = {10.2307/1999439},
MSC2010 = {26A24 26A15},
Zbl = {0517.26006}
}