• https://researchcommons.waikato.ac.nz/handle/10289/11844
• https://researchcommons.waikato.ac.nz/handle/10289/10934
• https://researchcommons.waikato.ac.nz/handle/10289/11798
• https://researchcommons.waikato.ac.nz/handle/10289/11797