https://jnfa.mathres.org/archives/1030 2016-09-23T14:37:44+00:00 monthly 0.2 https://jnfa.mathres.org/archives/1026 2016-09-18T01:48:52+00:00 monthly 0.2 https://jnfa.mathres.org/archives/1022 2016-09-11T13:59:41+00:00 monthly 0.2 https://jnfa.mathres.org/archives/1018 2016-09-09T04:28:34+00:00 monthly 0.2