• Recent studies on signs : commentary and perspectivesPietarinen, Ahti-VeikkoSign systems studies = Töid märgisüsteemide alalt = Труды по знаковым системам2015 / p. 616-650 https://doi.org/10.12697/SSS.2015.43.4.15 https://www.ester.ee/record=b1331700*est https://www.scopus.com/sourceid/17700155437 https://www.scopus.com/record/display.uri?eid=2-s2.0-84994049257&origin=inward&txGid=ea30d9ae55693d4cb04a7a7cc0bba9a8 https://www.webofscience.com/wos/woscc/full-record/WOS:000369351800015