@techreport {TR-1995-012,
   type = {Technical Report},
   author = {Sarah Douglas, Christopher Hundhausen, Donna McKeown },
   title = {Toward Empirically-Based Software Visualization Languages},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1995-012,
   month = 5,
   year = 1995,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1995-012.pdf}},
}