From 8a888fc66f216848eac705ca2da2afbc03c96ba2 Mon Sep 17 00:00:00 2001
From: Ekaitz Zarraga <ekaitz@elenq.tech>
Date: Wed, 7 Aug 2024 21:50:00 +0200
Subject: bibliography: add Backus' Liberate from Von Neumann

---
 bibliography.bib | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/bibliography.bib b/bibliography.bib
index 3460e08..428dce2 100644
--- a/bibliography.bib
+++ b/bibliography.bib
@@ -117,3 +117,59 @@
     pages = {20–25},
     numpages = {6}
 }
+
+@article{LiberateFromVonNeumann:Backus,
+    author = {Backus, John},
+    title = {Can programming be liberated from the von Neumann style? a functional style and its algebra of programs},
+    year = {1978},
+    issue_date = {Aug. 1978},
+    publisher = {Association for Computing Machinery},
+    address = {New York, NY, USA},
+    volume = {21},
+    number = {8},
+    issn = {0001-0782},
+    url = {https://doi.org/10.1145/359576.359579},
+    doi = {10.1145/359576.359579},
+    abstract = {Conventional programming languages are growing ever more
+        enormous, but not stronger. Inherent defects at the most basic level
+        cause them to be both fat and weak: their primitive word-at-a-time
+        style of programming inherited from their common ancestor—the von
+        Neumann computer, their close coupling of semantics to state
+        transitions, their division of programming into a world of
+        expressions and a world of statements, their inability to
+        effectively use powerful combining forms for building new programs
+        from existing ones, and their lack of useful mathematical
+        properties for reasoning about programs.An alternative functional
+        style of programming is founded on the use of combining forms for
+        creating programs. Functional programs deal with structured data,
+        are often nonrepetitive and nonrecursive, are hierarchically
+        constructed, do not name their arguments, and do not require the
+        complex machinery of procedure declarations to become generally
+        applicable. Combining forms can use high level programs to build
+        still higher level ones in a style not possible in conventional
+        languages.Associated with the functional style of programming is an
+        algebra of programs whose variables range over programs and whose
+        operations are combining forms. This algebra can be used to
+        transform programs and to solve equations whose “unknowns” are
+        programs in much the same way one transforms equations in high
+        school algebra. These transformations are given by algebraic laws
+        and are carried out in the same language in which programs are
+        written. Combining forms are chosen not only for their programming
+        power but also for the power of their associated algebraic laws.
+        General theorems of the algebra give the detailed behavior and
+        termination conditions for large classes of programs.A new class of
+        computing systems uses the functional programming style both in its
+        programming language and in its state transition rules. Unlike von
+        Neumann languages, these systems have semantics loosely coupled to
+        states—only one state transition occurs per major computation.},
+    journal = {Commun. ACM},
+    month = {aug},
+    pages = {613–641},
+    numpages = {29},
+    keywords = {von Neumann languages, von Neumann computers, programming
+        languages, program transformation, program termination, program
+        correctness, models of computing systems, metacomposition,
+        functional programming, functional forms, combining forms, applicative
+        state transition systems, applicative computing systems, algebra of
+        programs}
+}
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