Transitions between 4-intersection values of planar regions Kathleen Bell | Thomas A. Richmond | Show more Kathleen Bell United States Western Kentucky University Department of Mathematics Thomas A. Richmond https://orcid.org/0000-0003-1883-8146 United States Western Kentucky University Department of Mathematics Submitted: 2016-10-13 | Accepted: 2017-01-25 | Published: 2017-04-03 DOI: https://doi.org/10.4995/agt.2017.6716
