82240
The logistic function was introduced in a series of three papers by Pierre François Verhulst between 1838 and 1847 , who devised it as a model of population growth by adjusting the exponential growth model , under the guidance of Adolphe Quetelet .
 Pierre François Verhulst, Adolphe Quetelet
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pierre François Verhulst, Adolphe Quetelet