Keenan, Philip T.2018-06-182018-06-181991-12Keenan, Philip T.. "Conventions for Using PIERS." (1991) <a href="https://hdl.handle.net/1911/101740">https://hdl.handle.net/1911/101740</a>.https://hdl.handle.net/1911/10174015 ppengConventions for Using PIERSTechnical reportTR91-40