‘ Mercator dicit...‘ : The Relationship Between the Merchant and his Assistant in the Old Czech Unquentarius - Nicholson, Christopher (Harlaxton Symposium (29th : 2012 : Harlaxton, England). The @medieval merchant. - Donington : Shaun Tyas, 2014. - xvi, 464 pages, 64 unumbered pages of plates. - ISBN 1-907730-36-2, 2014)