Besner, Manfred http://orcid.org/0000-0002-5724-0481
Article History
Received: 4 May 2019
Accepted: 25 November 2019
First Online: 5 December 2019
Change Date: 18 February 2020
Change Type: Correction
Change Details: I am grateful to André Casajus who pointed out to me that the original <Emphasis Type="Bold">WSMon</Emphasis> is equivalent to <Emphasis Type="Bold">SMon</Emphasis> and Counterexample (5) does not satisfy <Emphasis Type="Bold">SMon</Emphasis>, leading to the following errata: