https://lafaye.r-universe.dev/ConvergenceConceptshttps://lafaye.r-universe.dev/api/packages/ConvergenceConceptshttps://lafaye.r-universe.dev/ConvergenceConcepts/ConvergenceConcepts.pdfhttps://lafaye.r-universe.dev/ConvergenceConcepts/doc/manual.htmlhttps://lafaye.r-universe.dev/ConvergenceConcepts/citationhttps://lafaye.r-universe.dev/ConvergenceConcepts/citation.txthttps://lafaye.r-universe.dev/ConvergenceConcepts/citation.cff