Boyvalenkov, P. G. http://orcid.org/0000-0001-7563-9552
Dragnev, P. D.
Hardin, D. P.
Saff, E. B.
Stoyanova, M. M.
Funding for this research was provided by:
Bulgarian National Science Fund (DN02-2/2016, DN02-2/2016)
Simons Foundation (282207)
Directorate for Mathematical and Physical Sciences (DMS-1516400, DMS-1516400)
Article History
Received: 29 December 2017
Revised: 7 June 2018
Accepted: 17 July 2018
First Online: 26 July 2018