Thank you for your interest. One of the articles we have had been referring to is "Associations of Cognitive Function Scores with Carbon Dioxide, Ventilation, and Volatile Organic Compound Exposures in Office Workers: A Controlled Exposure Study of Green and but Office Environments", Joseph g. Allen, Piers MacNaughton, Usha Satish, Suresh Santanam, Jose Vallarino, and John d. Spengler. (https://ehp.niehs.nih.gov/doi/10.1289/ehp.1510037)