@mastersthesis {MS-198706-Robinson,
   type = {Masters Thesis},
   author = {William N. Robinson},
   title = {Towards Formalization of Specification Design},
   school = {College of Arts and Sciences, University of Oregon},
   month = 6,
   year = 1987,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/MS-198706-Robinson.pdf}},
}