What makes you think it wasn't peer reviewed? It says it was published in 'Explore', which is a peer reviewed journal. https://www.sciencedirect.com/journal/exp

What makes you think it wasn't peer reviewed? It says it was published in 'Explore', which is a peer reviewed journal. https://www.sciencedirect.com/journal/explore https://www.sciencedirect.com/journal/explore