How many papers whose authors include Thomas Wiegand were published in 1995?
published in 1995 refers to Year = 1995; 'Thomas Wiegand' is the name of author
SELECT COUNT(T2.Title) FROM PaperAuthor AS T1 INNER JOIN Paper AS T2 ON T1.PaperId = T2.Id WHERE T1.Name = 'Thomas Wiegand' AND T2.Year = 1995