Designing a Flexible Feeder Transit System Serving Irregularly Shaped and Gated Communities: Determining Service Area and Feeder Route Planning | Journal of Urban Planning and Development | Vol 141, No 3
All Fixed Up - IFR Magazine
Russ Roslewski, CFI/CFII/MEI: Feeder routes to procedure turns - don't make up your own!
instrument procedures - When to use feeder route - Aviation Stack Exchange