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references.html

@@ -576,6 +576,9 @@ <h1>References<a class="anchor" aria-label="anchor" href="#references"><i class=
 <div id="ref-thiele_r_2014" class="csl-entry">
 Thiele, J. 2014. <span>“R <span>Marries NetLogo</span>: <span>Introduction</span> to the <span>RNetLogo Package</span>.”</span> <em>Journal of Statistical Software</em> 58 (2): 1–41. <a href="https://doi.org/ghfbck">https://doi.org/ghfbck</a>.
 </div>
+<div id="ref-tobler_computer_1970" class="csl-entry">
+Tobler, Waldo R. 1970. <span>“A Computer Movie Simulating Urban Growth in the <span>Detroit</span> Region.”</span> <em>Economic Geography</em>, 234–40.
+</div>
 <div id="ref-tobler_smooth_1979" class="csl-entry">
 Tobler, Waldo R. 1979. <span>“Smooth <span>Pycnophylactic Interpolation</span> for <span>Geographical Regions</span>.”</span> <em>Journal of the American Statistical Association</em> 74 (367): 519–30. <a href="https://doi.org/ghz78f">https://doi.org/ghz78f</a>.
 </div>

spatial-operations.html

@@ -551,7 +551,7 @@ <h3>
 Often this is the case for administrative boundary data, whereby larger units — such as Middle Layer Super Output Areas (<a href="https://www.ons.gov.uk/methodology/geography/ukgeographies/censusgeography">MSOAs</a>) in the UK or districts in many other European countries — are composed of many smaller units.</p>
 <p><em>Incongruent</em> aggregating objects, by contrast, do not share common borders with the target <span class="citation">(<a href="references.html#ref-qiu_development_2012">Qiu, Zhang, and Zhou 2012</a>)</span>.
 This is problematic for spatial aggregation (and other spatial operations) illustrated in Figure <a href="spatial-operations.html#fig:areal-example">4.9</a>: aggregating the centroid of each sub-zone will not return accurate results.
-Areal interpolation overcomes this issue by transferring values from one set of areal units to another, using a range of algorithms including simple area weighted approaches and more sophisticated approaches such as ‘pycnophylactic’ methods <span class="citation">(<a href="references.html#ref-tobler_smooth_1979">Tobler 1979</a>)</span>.</p>
+Areal interpolation overcomes this issue by transferring values from one set of areal units to another, using a range of algorithms including simple area weighted approaches and more sophisticated approaches such as ‘pycnophylactic’ methods <span class="citation">(<a href="references.html#ref-tobler_smooth_1979">Waldo R. Tobler 1979</a>)</span>.</p>
 <div class="figure" style="text-align: center">
 <span style="display:block;" id="fig:areal-example"></span>
 <img src="04-spatial-operations_files/figure-html/areal-example-1.png" alt="Illustration of congruent (left) and incongruent (right) areal units with respect to larger aggregating zones (translucent ted borders)." width="100%"><p class="caption">

transport.html

@@ -128,7 +128,7 @@ <h2>
 <span class="header-section-number">13.1</span> Introduction<a class="anchor" aria-label="anchor" href="#introduction-7"><i class="fas fa-link"></i></a>
 </h2>
 <p>In few other sectors is geographic space more tangible than transportation.
-The effort of moving (overcoming distance) is central to the ‘first law’ of geography, defined by Waldo Tobler in 1970 as follows <span class="citation">(<a href="#ref-tobler_computer_1970"><strong>tobler_computer_1970?</strong></a>)</span>:</p>
+The effort of moving (overcoming distance) is central to the ‘first law’ of geography, defined by Waldo Tobler in 1970 as follows <span class="citation">(<a href="references.html#ref-tobler_computer_1970">Waldo R. Tobler 1970</a>)</span>:</p>
 <blockquote>
 <p>Everything is related to everything else, but near things are more related than distant things.</p>
 </blockquote>