"source of barriers" is a correct and usable phrase in written English.
It refers to something or someone that hinders or obstructs progress or achievement. Example: The lack of resources has been identified as the main source of barriers for small businesses in this industry.
The success of MI lies on recognizing sources of barriers and averting them.
Fifth, rather than identifying external sources of barriers, two South Asian women internalized their barriers and blamed themselves for not practicing SMBG regularly.
Our objective in summarizing data from quantitative and qualitative studies was to explore the types and sources of barriers to seasonal influenza vaccination among elderly people and their related social determinants.
The source of the barriers is argued to lie in the organisation of the construction industry, including the linear design process, the reliance on cost-based competitive tendering and the incentives placed upon different actors.
Barriers were analysed with regard to the source of the barrier, and these were subsequently cross-referenced with the motivations of the individuals involved.
The Temple of Dagon is the source of the barrier, but the entrance is sealed off to prevent any interference.
In addition, post-mating barriers are indicated by reduced fitness of hybrids, but sources of those barriers (i.e. ecological maladaptation or genetic incompatibilities) have not yet been detected.
Radiation protection of living organisms requires control of sources, barriers between source and living being, or removal of the target entity.
However, in the former case the performance can be severely reduced for combinations of short source to barrier distances and/or high barriers.
