The phrase "are derived from several" is correct and usable in written English.
It can be used when discussing sources or origins of information, concepts, or items that come from multiple places or influences.
Example: "The theories presented in this paper are derived from several key studies conducted over the last decade."
Alternatives: "come from various" or "originate from multiple".
"Values and units of measurement listed in these tables are derived from several resources.
Government revenues are derived from several main sources, including income taxes, corporate taxes, taxes on the sale of goods and services, and national insurance contributions.
In pre-clinical and clinical protocols of critical defects in which SSC are employed, two approaches are mainly used: in the first, SSC are derived from bone marrow and directly introduced at the lesion site, in the second, SSC are derived from several sites and are expanded ex vivo before being implanted.
To this end, this paper proposes a set of methodologies that are derived from several spectrum sensing experiments using heterogeneous sensing solutions.
Since the TACs of the TD are derived from several time points in different animals, each individual time point has its own standard deviation (SD).
Data are derived from several current studies as well as previously collected data sets from the Established Populations for Epidemiologic Studies of the Elderly (EPESE), National Long Term Care Survey, and the Chinese Longevity Study (with Dr. Zeng Yi).
Their income is derived from several sources.
Australian lancewood is derived from several species of Backhousia (family Myrtaceae).
Most of these major haplogroups are derived from a single founder respectively except that Haplogroup D4j1a1 might be derived from several but phylogenetically near founders.
The total gross domestic product (GDP) of the state is derived from several sources, with manufacturing the largest source, followed by services, commerce, transportation, and agriculture.
The plain's name is derived from several hundred huge and ancient carved stone jars that were discovered in the region in the 19th century by the French.
