“…Brázdil and Kotyza, 1995Brázdil et al, 2013a; spanning periods from 1000 to 1830 CE), Rüdiger Glaser (e.g. Glaser, 2001;Glaser and Riemann, 2009;1000, Astrid Ogilvie and Graham Farmer (1997;1200-1439, Gabriela Schwarz-Zanetti (1998; 1000-1524 CE), Lajos Rácz (1999; 16th century onwards), the Dutch working group around Aryan Van Engelen (Van Engelen et al, 2001;Shabalova and van Engelen, 2003), Maria-João Alcoforado et al (2000;1675-1715, Elena Xoplaki et al (2001;1675-1715and 1780-1830, Anita Bokwa et al (2001; 16th and 17th centuries), Petr Dobrovolný et al (2009), Dario Camuffo et al (2010;1500CE), Maria Fernández-Fernández et al (20141750-1840, Laurent Litzenburger (2015;1400-1530CE), and Chantal Camenisch (2015a15th century). The basis of these reconstructions is mainly narrative evidence from multiple sources, or in the case of Kotyza (1995, 2000) and Fernández-Fernández et al (2014), a single narrative source.…”