50 | -- | 59 | Barbara Liskov, Stephen N. Zilles. Programming with Abstract Data Types |
9 | -- | 12 | Neodet Bulut, Maurice H. Halstead. Impurities found in algorithm implementations |
12 | -- | 20 | Richard H. Karpinski. An unstructured view of structured programming |
7 | -- | 23 | Ralph E. Griswold. Suggested revisions and additions to the syntax and control mechanisms of SNOBOL4 |
24 | -- | 40 | Jacob Palme. SIMULA as a tool for extensible program products |